{"id":48370,"date":"2025-09-11T11:00:00","date_gmt":"2025-09-11T14:00:00","guid":{"rendered":"https:\/\/mestredasreceitas.com\/en\/onion-soup\/"},"modified":"2025-09-11T11:00:00","modified_gmt":"2025-09-11T14:00:00","slug":"onion-soup","status":"publish","type":"post","link":"https:\/\/mestredasreceitas.com\/en\/onion-soup\/","title":{"rendered":"Onion Soup"},"content":{"rendered":"<p class=\"summarization\"><strong>Onion soup is a savory broth made by slowly caramelizing onions to develop deep sweet-umami flavor, deglazing with wine, simmering with rich stock and herbs, then topping with toasted baguette and melted Gruy\u00e8re for a classic gratin\u00e9e finish, served hot.<\/strong><\/p>\n<p><strong>onion soup<\/strong> is more than a bowl\u2014it&#8217;s caramelized sweetness, savory depth, and comfort all at once. Curious how simple onions become something extraordinary? Follow this clear, tested guide to ingredients, technique, and practical shortcuts that anyone can try.<\/p>\n<p><\/p>\n<h2>Ingredients of onion soup<\/h2>\n<p><img src='https:\/\/mestredasreceitas.com\/en\/wp-content\/uploads\/2026\/09\/ingredients-of-onion-soup.webp' alt='Ingredients of onion soup' title='Ingredients of onion soup' \/><\/p>\n<p>To make classic <strong>onion soup<\/strong> for 4 servings, gather the ingredients below:<\/p>\n<ul>\n<li><strong>1.5\u20132 lb (700\u2013900 g) yellow onions<\/strong> \u2014 thinly sliced. Substitute sweet or Vidalia onions for a milder taste.<\/li>\n<li><strong>2 tbsp unsalted butter<\/strong> \u2014 for richer caramelization. Swap for olive oil to make it dairy-free.<\/li>\n<li><strong>1 tbsp olive oil<\/strong> \u2014 helps prevent burning; you can use 3 tbsp butter instead for extra richness.<\/li>\n<li><strong>1 tsp granulated sugar<\/strong> \u2014 optional, helps speed and deepen caramelization.<\/li>\n<li><strong>1 tbsp all-purpose flour<\/strong> \u2014 optional, to slightly thicken the broth. Use 1 tsp cornstarch for a gluten-free option.<\/li>\n<li><strong>6 cups (1.4 L) beef broth<\/strong> \u2014 low-sodium preferred. Substitute vegetable broth for a vegetarian version.<\/li>\n<li><strong>1 cup (240 ml) dry white wine or dry sherry<\/strong> \u2014 optional; replace with extra broth if omitted.<\/li>\n<li><strong>2 sprigs fresh thyme<\/strong> \u2014 or 1\/2 tsp dried thyme.<\/li>\n<li><strong>1 bay leaf<\/strong> \u2014 remove before serving.<\/li>\n<li><strong>About 1 tsp kosher salt<\/strong> \u2014 adjust to taste after simmering.<\/li>\n<li><strong>1\/2 tsp freshly ground black pepper<\/strong> \u2014 or to taste.<\/li>\n<li><strong>4\u20136 slices baguette<\/strong> (about 1\/2&#8243; thick) \u2014 toasted. Use gluten-free bread if needed.<\/li>\n<li><strong>1\u20131 1\/2 cups (100\u2013150 g) grated Gruy\u00e8re cheese<\/strong> \u2014 meltable Swiss or Emmental are good substitutes; mozzarella works in a pinch.<\/li>\n<li><strong>1 tbsp cognac or brandy<\/strong> \u2014 optional, stirred in off heat for depth.<\/li>\n<\/ul>\n<h3>Notes and substitutions<\/h3>\n<p><strong>Vegetarian option:<\/strong> Use rich vegetable broth and omit cognac to keep flavors balanced. Add a dash of soy sauce or tamari for extra umami.<\/p>\n<p><strong>Scaling and salt:<\/strong> Taste the soup near the end before adding more salt. Broth concentration and cheese saltiness vary by brand.<\/p>\n<p><strong>Storage tip:<\/strong> Store leftover caramelized onions and broth separately in the fridge up to 4 days. Reheat gently and assemble just before serving.<\/p>\n<h2>How to prepare onion soup<\/h2>\n<p><img src='https:\/\/mestredasreceitas.com\/en\/wp-content\/uploads\/2026\/09\/how-to-prepare-onion-soup.webp' alt='How to prepare onion soup' title='How to prepare onion soup' \/><\/p>\n<ol>\n<li><strong>Prepare the onions:<\/strong> Peel 1.5\u20132 lb (700\u2013900 g) yellow onions, cut them in half from root to tip, then slice thinly and evenly to help them cook at the same rate.<\/li>\n<li><strong>Heat the pan:<\/strong> Warm a large, heavy-bottomed pot over medium-low heat and add 2 tbsp unsalted butter and 1 tbsp olive oil so the butter won\u2019t burn.<\/li>\n<li><strong>Start caramelizing:<\/strong> Add the sliced onions and 1 tsp granulated sugar, stir to coat, and cook slowly. Stir every 3\u20135 minutes so they brown evenly; total time is about 30\u201340 minutes until deep golden.<\/li>\n<\/ol>\n<h3>Mastering caramelization<\/h3>\n<p><strong>Keep the heat low:<\/strong> If the onions brown too fast, lower the heat. Use a wide pan so moisture evaporates and the onions caramelize rather than steam. If the pan dries or dark bits stick, add a splash of broth or water and scrape the fond with a wooden spoon.<\/p>\n<ol start=\"4\">\n<li><strong>Thicken slightly (optional):<\/strong> Sprinkle 1 tbsp all-purpose flour over the onions, stir and cook 1\u20132 minutes to remove raw flour taste; use 1 tsp cornstarch mixed with a little water for gluten-free.<\/li>\n<li><strong>Deglaze the pan:<\/strong> Pour in 1 cup (240 ml) dry white wine or dry sherry, raise heat briefly, and scrape the browned bits from the bottom. Let the alcohol mostly evaporate, about 2\u20133 minutes.<\/li>\n<li><strong>Add broth and herbs:<\/strong> Pour in 6 cups (1.4 L) beef broth (or vegetable broth for vegetarian), add 2 sprigs fresh thyme and 1 bay leaf, bring to a simmer and cook gently for 20\u201325 minutes.<\/li>\n<li><strong>Season and adjust:<\/strong> Remove thyme sprigs and bay leaf, then taste and add about 1 tsp kosher salt and 1\/2 tsp freshly ground black pepper as needed. If the soup tastes flat, a splash of soy sauce or Worcestershire adds umami.<\/li>\n<li><strong>Prepare the bread and cheese:<\/strong> Brush 4\u20136 slices of baguette with a little oil or butter and toast until golden. Grate 1\u20131 1\/2 cups (100\u2013150 g) Gruy\u00e8re or Swiss cheese.<\/li>\n<li><strong>Assemble and gratinate:<\/strong> Ladle hot soup into oven-safe bowls, place one or two toasted baguette slices on top of each, cover with grated cheese, and bake at 450\u00b0F (230\u00b0C) or broil 3\u20135 minutes until the cheese bubbles and turns golden brown. Watch closely to avoid burning.<\/li>\n<li><strong>Finish and serve:<\/strong> Let the bowls rest 1\u20132 minutes, remove any herb stems, optionally stir in 1 tbsp cognac off the heat, and serve carefully\u2014the bowls will be very hot.<\/li>\n<\/ol>\n<p><strong>Quick tips:<\/strong> Use low-sodium broth to control salt, slice onions uniformly, and be patient with caramelization\u2014good flavor builds slowly.<\/p>\n<h2>Choosing the right onions<\/h2>\n<p><img src='https:\/\/mestredasreceitas.com\/en\/wp-content\/uploads\/2026\/09\/choosing-the-right-onions.webp' alt='Choosing the right onions' title='Choosing the right onions' \/><\/p>\n<p>For the best <strong>onion soup<\/strong>, choosing the right onion makes a big difference in flavor and texture.<\/p>\n<h3>Best onion types for soup<\/h3>\n<ul>\n<li><strong>Yellow onions<\/strong> \u2014 most common choice; they caramelize well and give a deep, sweet-savory base.<\/li>\n<li><strong>Sweet onions (Vidalia, Walla Walla)<\/strong> \u2014 milder and sweeter when cooked; use for a gentler soup.<\/li>\n<li><strong>White onions<\/strong> \u2014 sharper raw, but mellow when cooked; good if you want a brighter onion note.<\/li>\n<li><strong>Red onions<\/strong> \u2014 not typical for classic soup, but add color and a light tang if mixed with other types.<\/li>\n<li><strong>Shallots<\/strong> \u2014 small and delicate; use a few for added sweetness and subtle complexity.<\/li>\n<\/ul>\n<h3>How to choose at the market<\/h3>\n<ul>\n<li>Pick onions that feel firm and heavy for their size.<\/li>\n<li>Avoid bulbs with soft spots, mold, or green shoots.<\/li>\n<li>Look for dry, papery skins \u2014 they store better.<\/li>\n<li>Buy by use: yellow for classic depth, sweet for milder soups, and shallots for nuance.<\/li>\n<\/ul>\n<h3>Storage and prep tips<\/h3>\n<p><strong>Store<\/strong> whole onions in a cool, dry, well-ventilated place away from potatoes. Do not refrigerate whole onions \u2014 cold makes them soft.<\/p>\n<p><strong>Prep<\/strong> onions just before cooking for best flavor. Slice them thin and even so they cook uniformly. If you need faster caramelization, add a pinch of sugar after a few minutes of cooking.<\/p>\n<h3>Combining onions and substitutions<\/h3>\n<p>For richer flavor, mix yellow onions with a small amount of shallot or sweet onion. If you lack fresh onions, use rehydrated dried onions sparingly and adjust taste. For a vegetarian twist, pick sweet onions and a robust vegetable broth for balanced sweetness and depth.<\/p>\n<h2>Mastering caramelization and flavor building<\/h2>\n<p><img src='https:\/\/mestredasreceitas.com\/en\/wp-content\/uploads\/2026\/09\/mastering-caramelization-and-flavor-building.webp' alt='Mastering caramelization and flavor building' title='Mastering caramelization and flavor building' \/><\/p>\n<p>Caramelization and flavor building turn plain onions into the rich base of a memorable <strong>onion soup<\/strong>. Follow careful steps and simple rules to develop deep, sweet, savory flavors.<\/p>\n<h3>Step-by-step technique<\/h3>\n<ol>\n<li><strong>Slice uniformly:<\/strong> Cut onions into even, thin slices so they cook at the same speed.<\/li>\n<li><strong>Choose the right pan:<\/strong> Use a wide, heavy-bottomed skillet or pot to spread onions in a single layer and allow moisture to evaporate.<\/li>\n<li><strong>Start with moderate fat:<\/strong> Add 2 tbsp butter plus 1 tbsp olive oil so butter browns slowly without burning.<\/li>\n<li><strong>Cook low and slow:<\/strong> Keep heat at low\u2013medium-low. Stir every 3\u20135 minutes. Expect 30\u201340 minutes for deep golden color.<\/li>\n<li><strong>Manage moisture:<\/strong> If onions steam, raise heat briefly to evaporate liquid. If they stick, add a splash of broth or water and scrape the browned bits.<\/li>\n<li><strong>Use a pinch of sugar (optional):<\/strong> Add 1 tsp sugar early to help even, faster caramelization without making the onions taste sweet.<\/li>\n<li><strong>Deglaze for flavor:<\/strong> Pour 1 cup dry wine or sherry and scrape the fond. Cook 2\u20133 minutes to reduce and concentrate flavor.<\/li>\n<li><strong>Layer umami:<\/strong> Add 6 cups broth and herbs, simmer 20\u201325 minutes. A dash of soy sauce, Worcestershire, or miso can boost savory depth.<\/li>\n<li><strong>Finish with acid:<\/strong> A small splash of vinegar, lemon juice, or cognac at the end brightens the soup and balances sweetness.<\/li>\n<\/ol>\n<h3>Troubleshooting and tips<\/h3>\n<ul>\n<li><strong>If onions brown too fast:<\/strong> Lower the heat and stir more often to avoid burning bitter bits.<\/li>\n<li><strong>If onions taste flat:<\/strong> Add a small splash of soy sauce or a pinch of salt earlier to develop savory notes while cooking.<\/li>\n<li><strong>For creamier mouthfeel:<\/strong> Stir in a knob of butter off the heat or a tablespoon of cream just before serving.<\/li>\n<li><strong>To speed things up:<\/strong> Use a larger pan and slightly higher heat, but watch closely and stir frequently to prevent burning.<\/li>\n<li><strong>Make-ahead:<\/strong> Caramelized onions keep 3\u20134 days refrigerated and can be frozen for up to 3 months.<\/li>\n<\/ul>\n<h2>Variations of onion soup<\/h2>\n<p><img src='https:\/\/mestredasreceitas.com\/en\/wp-content\/uploads\/2026\/09\/variations-of-onion-soup.webp' alt='Variations of onion soup' title='Variations of onion soup' \/><\/p>\n<p>Try these practical <strong>onion soup<\/strong> variations to suit diets, time, and flavor preferences.<\/p>\n<h3>Classic French gratin\u00e9e<\/h3>\n<p>A rich, bubbling version with beef broth, wine, and melted cheese over toasted baguette.<\/p>\n<ul>\n<li><strong>6 cups (1.4 L) beef broth<\/strong> \u2014 low-sodium preferred.<\/li>\n<li><strong>1 cup (240 ml) dry white wine<\/strong> \u2014 or extra broth.<\/li>\n<li><strong>4\u20136 slices baguette<\/strong> \u2014 toasted; use gluten-free if needed.<\/li>\n<li><strong>1\u20131 1\/2 cups (100\u2013150 g) grated Gruy\u00e8re<\/strong> \u2014 Swiss or Emmental as substitutes.<\/li>\n<\/ul>\n<h3>Vegetarian onion soup<\/h3>\n<p>Swap beef broth for a rich vegetable stock and boost umami without meat.<\/p>\n<ul>\n<li><strong>6 cups (1.4 L) vegetable broth<\/strong> \u2014 use a low-sodium, robust brand.<\/li>\n<li><strong>1 tbsp soy sauce or tamari<\/strong> \u2014 deepens savory flavor.<\/li>\n<li><strong>Gruy\u00e8re or a vegetarian melting cheese<\/strong> \u2014 check for animal rennet.<\/li>\n<\/ul>\n<h3>Vegan miso onion soup<\/h3>\n<p>Miso adds savory depth while keeping the soup dairy-free and flavorful.<\/p>\n<ul>\n<li><strong>6 cups (1.4 L) vegetable broth<\/strong><\/li>\n<li><strong>1\u20132 tbsp white or yellow miso<\/strong> \u2014 dissolved in a little broth off heat.<\/li>\n<li><strong>Vegan bread and dairy-free cheese (optional)<\/strong> \u2014 or skip the gratin\u00e9e.<\/li>\n<\/ul>\n<h3>Mushroom and onion soup<\/h3>\n<p>Add mushrooms for earthy complexity and a meatier mouthfeel.<\/p>\n<ul>\n<li><strong>8 oz (225 g) cremini or button mushrooms<\/strong> \u2014 sliced; porcini rehydrated adds extra umami.<\/li>\n<li><strong>6 cups broth<\/strong> \u2014 beef or vegetable.<\/li>\n<li><strong>1 tsp thyme<\/strong> \u2014 fresh or 1\/2 tsp dried.<\/li>\n<\/ul>\n<h3>Smoky bacon or pancetta variation<\/h3>\n<p>Render chopped bacon or pancetta first for a smoky base, then caramelize the onions in the fat.<\/p>\n<ul>\n<li><strong>4 oz (115 g) bacon or pancetta<\/strong> \u2014 diced; substitute smoked tempeh for a vegetarian twist.<\/li>\n<li><strong>6 cups broth<\/strong><\/li>\n<li><strong>Optional: 1 tbsp maple syrup<\/strong> \u2014 for a sweet-smoky balance.<\/li>\n<\/ul>\n<h3>Apple, cider, and thyme twist<\/h3>\n<p>A small amount of apple or hard cider brightens the soup with subtle fruit notes.<\/p>\n<ul>\n<li><strong>1\/2 cup (120 ml) apple cider<\/strong> \u2014 or 1\/4 cup hard cider, simmered to reduce.<\/li>\n<li><strong>Fresh thyme<\/strong> \u2014 2 sprigs.<\/li>\n<li><strong>6 cups broth<\/strong><\/li>\n<\/ul>\n<h3>Quick weeknight shortcut<\/h3>\n<p>Use this when you need onion soup fast without losing too much flavor.<\/p>\n<ol>\n<li><strong>Use pre-sliced or frozen caramelized onions:<\/strong> Saut\u00e9 briefly to warm and brown edges.<\/li>\n<li><strong>Deglaze:<\/strong> Add 1\/2 cup wine or extra broth and scrape the pan.<\/li>\n<li><strong>Add broth and herbs:<\/strong> Pour in 6 cups broth, add thyme and bay leaf, simmer 10\u201312 minutes.<\/li>\n<li><strong>Toast bread and finish:<\/strong> Top bowls with toasted bread and grated cheese, then broil 2\u20134 minutes until bubbly.<\/li>\n<\/ol>\n<h3>Tips for choosing a variation<\/h3>\n<ul>\n<li><strong>For deeper umami:<\/strong> Add a splash of soy sauce, Worcestershire, or a teaspoon of miso.<\/li>\n<li><strong>For less salt:<\/strong> Start with low-sodium broth and adjust at the end.<\/li>\n<li><strong>For dairy-free:<\/strong> Skip the gratin\u00e9e or use vegan cheese and crusty bread.<\/li>\n<\/ul>\n<h2>Serving and pairing suggestions<\/h2>\n<p><img src='https:\/\/mestredasreceitas.com\/en\/wp-content\/uploads\/2026\/09\/serving-and-pairing-suggestions.webp' alt='Serving and pairing suggestions' title='Serving and pairing suggestions' \/><\/p>\n<p>Serve <strong>onion soup<\/strong> hot and bubbly, with toasted bread and melted cheese for a classic experience that fills the room with savory aroma.<\/p>\n<h3>Garnishes and finishing touches<\/h3>\n<ul>\n<li><strong>Toasted baguette slice:<\/strong> Place one or two on top of each bowl so the cheese melts over it.<\/li>\n<li><strong>Grated cheese:<\/strong> 1\u20131\u00bd cups (100\u2013150 g) Gruy\u00e8re or Swiss; broil until golden and bubbling.<\/li>\n<li><strong>Fresh herbs:<\/strong> A few thyme leaves or chopped parsley added after broiling brighten the flavor.<\/li>\n<li><strong>Flavor boost:<\/strong> A small splash (1 tsp) of cognac, sherry, or a light vinegar off heat lifts the soup\u2019s sweetness.<\/li>\n<li><strong>Textural contrast:<\/strong> Top with toasted seeds or crispy shallots for crunch, if desired.<\/li>\n<\/ul>\n<h3>Wine and beverage pairings<\/h3>\n<ul>\n<li><strong>Dry white wine:<\/strong> Sauvignon Blanc or dry Chardonnay \u2014 acidity cuts through richness.<\/li>\n<li><strong>Light red:<\/strong> Pinot Noir \u2014 gentle tannins complement caramelized onions and cheese.<\/li>\n<li><strong>Beer:<\/strong> Brown ale or saison \u2014 malt and spice match the soup\u2019s savory notes.<\/li>\n<li><strong>Nonalcoholic:<\/strong> Sparkling apple or a lemon-ginger soda \u2014 Bright bubbles balance the soup\u2019s body.<\/li>\n<\/ul>\n<h3>Side dishes that pair well<\/h3>\n<ul>\n<li><strong>Simple green salad:<\/strong> Mixed greens with vinaigrette add freshness and acidity.<\/li>\n<li><strong>Roasted vegetables:<\/strong> Root vegetables or asparagus for a heartier meal.<\/li>\n<li><strong>Charcuterie board:<\/strong> Cured meats and pickles work well for casual sharing.<\/li>\n<li><strong>Light sandwiches:<\/strong> Open-faced tartines or a thin-crust tart for extra texture.<\/li>\n<\/ul>\n<h3>Serving tips and portions<\/h3>\n<ul>\n<li><strong>Portion size:<\/strong> About 1 to 1\u00bc cups (240\u2013300 ml) per person as a starter; increase for main course.<\/li>\n<li><strong>Bowl type:<\/strong> Use oven-safe, shallow bowls for even broiling and easier eating.<\/li>\n<li><strong>Temperature:<\/strong> Serve immediately after broiling; let rest 1\u20132 minutes so cheese sets but soup stays hot.<\/li>\n<li><strong>Salt control:<\/strong> Start with low-sodium broth and adjust salt after simmering to avoid oversalting.<\/li>\n<\/ul>\n<h3>Quick hosting checklist<\/h3>\n<ol>\n<li><strong>Pre-toast baguette slices<\/strong> and keep warm so they crisp when you assemble bowls.<\/li>\n<li><strong>Pre-grate cheese<\/strong> and portion into small dishes for quick topping.<\/li>\n<li><strong>Broil at the last minute<\/strong> to ensure cheese is bubbly and bread stays slightly crisp.<\/li>\n<li><strong>Have napkins and an extra spoon<\/strong> ready \u2014 bowls are hot and cheesy servings can be hearty.<\/li>\n<\/ol>\n<h2>Fun facts about onion soup<\/h2>\n<p><img src='https:\/\/mestredasreceitas.com\/en\/wp-content\/uploads\/2026\/09\/fun-facts-about-onion-soup.webp' alt='Fun facts about onion soup' title='Fun facts about onion soup' \/><\/p>\n<p><strong>onion soup<\/strong> has more to it than comfort\u2014history, chemistry, and simple tricks shape its flavor. Here are clear, fun facts to inspire your cooking.<\/p>\n<h3>Fun facts<\/h3>\n<ul>\n<li><strong>French roots:<\/strong> The gratin\u00e9ed version called soupe \u00e0 l&#8217;oignon became a Paris bistro favorite in the 1800s.<\/li>\n<li><strong>Gratin\u00e9e means toasted cheese:<\/strong> The name refers to the melted, browned cheese layer\u2014Gruy\u00e8re is the classic choice.<\/li>\n<li><strong>Caramelization is key:<\/strong> Slow cooking turns onion sugars into deep, savory-sweet flavors that define the soup.<\/li>\n<li><strong>Onion choice matters:<\/strong> Yellow onions give depth, sweet onions offer gentler flavor, and shallots add subtle complexity.<\/li>\n<li><strong>Deglazing adds depth:<\/strong> Wine or sherry lifts browned bits from the pan and concentrates savory notes.<\/li>\n<li><strong>Umami boosts:<\/strong> Small amounts of soy sauce, Worcestershire, or miso deepen the savory profile without masking the onions.<\/li>\n<li><strong>Make-ahead friendly:<\/strong> Caramelized onions keep 3\u20134 days refrigerated and freeze well for up to 3 months.<\/li>\n<li><strong>Finishing touch:<\/strong> A tiny splash of vinegar, lemon, or brandy at the end brightens the soup and balances sweetness.<\/li>\n<\/ul>\n<h3>Quick tips<\/h3>\n<ul>\n<li><strong>Slice evenly:<\/strong> Thin, uniform slices cook at the same rate for even caramelization.<\/li>\n<li><strong>Cook low and slow:<\/strong> Patience prevents burning and builds complex flavor over 30\u201340 minutes.<\/li>\n<li><strong>Use a wide pan:<\/strong> A large surface area helps moisture evaporate so onions brown instead of steam.<\/li>\n<\/ul>\n<h2>Conclusion<\/h2>\n<p>Onion soup can be simple yet deeply rewarding when you take time to caramelize the onions and layer flavors. Small techniques\u2014like proper slicing, low-and-slow cooking, and a good broth\u2014make a big difference.<\/p>\n<p>Try the steps and variations above to find the version you like best. If time is tight, prep caramelized onions ahead to speed dinner prep without losing flavor.<\/p>\n<p>Thank you for reading! Follow us on social media for tips, photos, and quick recipes, and visit <a href=\"https:\/\/mestredasreceitas.com\/\">Mestre das Receitas Cooking Blog<\/a> for more ideas and easy guides.<\/p>\n<h2>FAQ &#8211; Onion Soup Tips and Troubleshooting<\/h2>\n<h3>What type of onion works best for onion soup?<\/h3>\n<p>Yellow onions are the classic choice for deep, sweet flavor. Sweet onions give a milder taste and shallots add a subtle, delicate note.<\/p>\n<h3>How long should I caramelize the onions?<\/h3>\n<p>Plan for about 30\u201340 minutes over low to medium-low heat. Cook until they are deep golden and smell sweet, stirring every few minutes.<\/p>\n<h3>Why do my onions sometimes taste bitter and how can I fix it?<\/h3>\n<p>Bitterness comes from burning. Lower the heat, stir more often, and add a splash of broth or water to loosen stuck bits. A pinch of sugar early helps even caramelization.<\/p>\n<h3>Can I make a vegetarian or vegan onion soup?<\/h3>\n<p>Yes. Use a rich vegetable broth and add miso or soy sauce for umami. For vegan, skip the gratin\u00e9e or use a vegan melting cheese and dairy-free bread.<\/p>\n<h3>How should I store and reheat leftover onion soup?<\/h3>\n<p>Store caramelized onions and broth separately in the fridge up to 3\u20134 days. Reheat gently on the stove. Caramelized onions freeze well for up to 3 months.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>onion soup brings rich, caramelized flavors in a comforting bowl\u2014learn authentic French techniques, quick weeknight shortcuts, and perfect serving 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