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Onion Soup with Gruyère Croutons

A really filling soup that works well as a main meal and freezes brilliantly - so whip up a big batch and freeze some for later. This is designed to be a low cost recipe.

By bbcfood · From Open Recipes · 7 ingredients
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Why it works: Onion and pepper are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Onion Soup with Gruyère Croutons

Serves 4
Prep30 min
Cook1 hr

Ingredients

Directions

Step-by-step directions aren't available for this recipe. See the full recipe at the source →

Nutrition, whole recipe (rough)

607Calories
14 gProtein
13 gFat
106 gCarbs
What these numbers assume: 4 portions
IngredientPortion assumedkcal
Flour1 cup (125g) all-purpose455
Butter1 tbsp (14g)102
Onion1 medium (110g)44
Black Pepper1 tsp ground (2.3g)6

One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.

By bbcfood. Recipe from Open Recipes.

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

  1. Onion + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  2. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Butter + oniontop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

  4. Onion + flourtop 17% of all pairs
    Smell alikemoderate
    Cooked together32,460 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Pepper + flourtop 19% of all pairs
    Smell alikemoderate
    Cooked together50,459 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

Swap the onion

How well each one fits the dish's main ingredients (butter, pepper, flour):

  1. Shallotfits better
  2. Chivefits better
  3. Capsicumfits better
  4. Onionthe original

Fit is the average pairing score against butter, pepper, flour. Candidates are from the same food group and used in at least 100 recipes.