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Caramelized Onions, Pesto, and Grilled Mozzarella Sandwich

I once declared on this site that sandwiches weren't my thing.  I much preferred toast covered with ingredients over ingredients sandwiched between two thi

By naturallyella · From Open Recipes · 6 ingredients
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Caramelized Onions, Pesto, and Grilled Mozzarella Sandwich

Why it works: Tomato and olive are a kitchen classic. They rank in the top 1% of all ingredient pairs, and cooks put them together in 15,539 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Caramelized Onions, Pesto, and Grilled Mozzarella Sandwich

Serves 2

Ingredients

Directions

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

Nutrition, whole recipe (rough)

874Calories
30 gProtein
29 gFat
122 gCarbs
What these numbers assume: 6 portions
IngredientPortion assumedkcal
Flour1 cup (125g) all-purpose455
Milk1 cup (244ml) whole149
Olive Oil1 tbsp (14g)119
Mozzarella Cheese1 oz (28g)85
Onion1 medium (110g)44
Tomato1 medium (123g)22

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

By naturallyella. 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. Tomato + olivetop 1% of all pairs
    Smell alikemoderate
    Cooked together15,539 recipes

    Shared aroma: 3-hexenal (apple, fruity).

  2. Onion + tomatotop 8% of all pairs
    Smell alikemoderate
    Cooked together20,633 recipes

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

  3. Onion + olivetop 8% of all pairs
    Smell alikemoderate
    Cooked together29,779 recipes

    Shared aroma: 2,4-decadienal (seaweed).

  4. Bread + olivetop 9% of all pairs
    Smell alikemoderate
    Cooked together1,091 recipes

    Shared aroma: 2-undecenal (sweet).

  5. Tomato + breadtop 10% of all pairs
    Smell alikemoderate
    Cooked together1,013 recipes

    Shared aroma: 2-nonenal (fatty, green).

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 (tomato, milk, bread, olive):

  1. Capsicumfits better
  2. Potatofits better
  3. Eggplantfits better
  4. Onionthe original

Fit is the average pairing score against tomato, milk, bread, olive. Candidates are from the same food group and used in at least 100 recipes.