Best French Onion Soup Recipe, Whats Cooking America (2024)

FAQs

How do you deepen the flavor of French onion soup? ›

A few sprigs of thyme and a bay leaf elevate the soup even more, but I take it a step further, adding a splash of fish sauce for complexity and depth—don't worry, it won't taste fishy—and a hit of cider vinegar to balance some of that oniony sweetness.

The key to good French onion soup is to cook the onions so long that they threaten to melt into a viscous, dark brown paste, à la Marmite. As has already been extensively reported in Slate, there are no shortcuts when you're caramelizing onions; it always takes at least an hour, usually longer.

The caramelized onions for this soup cook more quickly due to a pinch of baking soda but still have that deep, slow-cooked flavor. Topping the soup with hot, cheesy toasts prepared while the soup simmers, eliminates the need to bake the soup in specialty French onion soup bowls.

Flour: a little all-purpose flour will help to thicken the soup. You can feel free to use gluten-free flour. Dry white wine: this helps to deglaze the pan and add a boost of flavor. Beef broth: I recommend a good quality beef broth or beef stock for the best flavor.

You can extract a clean, strong broth from a combination of water and several pantry ingredients. It's all about layering powerful flavor-enhancers that you probably already have on hand—bacon, tomato paste, herbs, peppercorns, a Parmesan rind, and, of course, kosher salt.

Wine is optional to deglaze the pan and add flavour to the soup. I recommend a dry white or red wine, such as a good quality Pinot Grigio/Gris, Sauv Blanc, Sémillon, Chardonnay, Merlot or Pinot Noir. Generally, if you can't drink it, don't cook with it.

If you can't get good quality beef broth, use chicken or vegetable instead. I find that the quality of those by mainstream brands is much better than the beef stock. The beef is fine to use in things like gravy and stews, but not when it's a key ingredient like in this recipe.

What is the Difference Between Onion Soup and French Onion Soup? French onion soup is always made with beef stock. Other onion soups can be made with chicken, vegetable, or beef stock. Additionally, French onion soup typically contains wine or sherry, which isn't typical or necessary in other onion soups.

While salt can be added to balance out this richness, using lemon instead will actually be more effective. This is because the acid from the lemon cuts through the fat and balances out the spices. Using lemon zest on top of each bowl is also a great garnish that provides a zesty punch in every bite.

What are the best onions for soup? ›

When you are sauteing onions to build flavor as a base for your dish (soup, tomato sauce, you name it), the yellow onion is your friend. That being said, white onions are a totally acceptable substitute for yellow, especially if you're cooking them.

Another option for thickening soup is by using dairy like sour cream or yogurt. Start with a small dollop and stir before checking the consistency and adding more. We recommend using plain yogurt so you don't alter the taste of the soup. You can also use cream if you prefer.

Sometimes soup just needs to simmer longer to reach the perfect consistency. Check to see if the vegetables are tender, and then taste the broth. If the soup tastes a bit watery, give it more time.

Generally speaking, leftovers including soup can last in a fridge that's set at 40 degrees Fahrenheit for three to four days. If you don't think you'll finish it within that time frame, freeze it instead.

Some fresh rosemary or thyme brings a woody, peppery taste to the soup, complementing the umami flavor of the beef stock. With a splash of balsamic vinegar and green onions or fresh basil as a garnish, the canned soup is transformed from a grocery store original into a gourmet dish.

Soak in Vinegar: It only takes about 15 minutes. Soaking raw onions in acid rinses away the harsh flavors and adds pleasant tartness. Soak in Water: Even water washes away those pesky sulfuric flavors. A quick 15-minute soak does the trick.

Dried herbs and seasonings: homemade seasoned salt, black pepper, Italian seasoning, and dried bay leaves lend flavor to the soup. Stock: I much prefer chicken stock over vegetable stock in terms of flavor, though if you want to keep this soup vegetarian, feel free to use vegetable broth or stock instead.

You can also add tomato paste or fresh or dried herbs like oregano or thyme. Starchy root vegetables like potato, parsnips, turnips and swede will add body to the soup and turn it into a true meal in a bowl. Using a good-quality stock (or making your own) will enhance the flavour of the soup.