Name: Piquillo Pepper Ketchup Recipe
Yield: About 2 cups
Ingredients: 2 tablespoons olive oil; 1/2 cup finely chopped yellow onion; 1 pound (about 7 medium) plum tomatoes, peeled, seeded, and chopped; One 12-ounce jar piquillo peppers, roughly chopped (about 1 cup); 1/4 cup white wine vinegar, plus more to taste; 2 teaspoons honey or sugar, plus more to taste; 2 garlic cloves, very finely chopped; 1 teaspoon finely chopped fresh thyme; Sea salt and freshly ground black pepper

Why it works: Olive and tomato 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 ↓

Piquillo Pepper Ketchup Recipe

About 2 cups

Ingredients

2 tablespoons olive oil
1/2 cup finely chopped yellow onion
1 pound (about 7 medium) plum tomatoes, peeled, seeded, and chopped
One 12-ounce jar piquillo peppers, roughly chopped (about 1 cup)
1/4 cup white wine vinegar, plus more to taste
2 teaspoons honey or sugar, plus more to taste
2 garlic cloves, very finely chopped
1 teaspoon finely chopped fresh thyme
Sea salt and freshly ground black pepper

Directions

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

Nutrition, whole recipe (rough)

351Calories

4 gProtein

14 gFat

57 gCarbs

What these numbers assume: 12 portions

Ingredient	Portion assumed	kcal
Olive Oil	1 tbsp (14g)	119
Honey	1 tbsp (21g)	64
Sugar	1 tbsp (12.5g) granulated	49
Onion	1 medium (110g)	44
Plum	1 medium (66g)	30
Tomato	1 medium (123g)	22
Pepper	1 tsp ground (2.3g)	6
Black Pepper	1 tsp ground (2.3g)	6
Garlic	1 clove (3g)	4
Thyme	1 tsp dried (1.4g)	4
Vinegar	1 tbsp (15ml) distilled	3
Salt	1 tsp (6g)	0

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

By chow. 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.

Olive + tomatotop 1% of all pairs

Smell alikemoderate

Cooked together15,539 recipes

Shared aroma: 3-hexenal (apple, fruity).
Plum + tomatotop 6% of all pairs

Smell alikemoderate

Cooked together1,480 recipes

Shared aroma: 2,4-decadienal (seaweed).
Tomato + peppertop 7% of all pairs

Smell alikemoderate

Cooked together17,923 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Olive + plumtop 8% of all pairs

Smell alikestrong

Cooked together1,266 recipes

Shared aroma: 2,4-decadienal (seaweed).
Onion + tomatotop 8% of all pairs

Smell alikemoderate

Cooked together20,633 recipes

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

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 (olive, plum, tomato, pepper, white wine, vinegar, honey):

Capsicumfits better
Cucumberfits better
Lettucefits about as well
Onionthe original

Fit is the average pairing score against olive, plum, tomato, pepper, white wine, vinegar, honey. Candidates are from the same food group and used in at least 100 recipes.

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