Name: Red Onion Relish
Yield: Serves 4
Ingredients: 2 red onions; 50g butter; 1 tbsp brown sugar; 1 tbsp Good quality red wine vinegar (I found a gorgeous French Cabernet Franc red wine vinegar which was so flavoursome)

Why it works: Red wine and vinegar work together. They rank in the top 10% of all ingredient pairs, and cooks put them together in 575 recipes. Both carry sotolon, which smells curry, maple. The science ↓

Red Onion Relish

Serves 4

Ingredients

2 red onions
50g butter
1 tbsp brown sugar
1 tbsp Good quality red wine vinegar (I found a gorgeous French Cabernet Franc red wine vinegar which was so flavoursome)

Directions

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

Nutrition, whole recipe (rough)

198Calories

1 gProtein

12 gFat

23 gCarbs

What these numbers assume: 4 portions

Ingredient	Portion assumed	kcal
Butter	1 tbsp (14g)	102
Sugar	1 tbsp (12.5g) granulated	49
Red Onion	1 medium (110g)	44
Vinegar	1 tbsp (15ml) distilled	3

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

By bbcgoodfood. 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.

Red wine + vinegartop 10% of all pairs

Smell alikemoderate

Cooked together575 recipes

Shared aroma: sotolon (curry, maple).
Onion + vinegartop 14% of all pairs

Smell alikemoderate

Cooked together18,226 recipes

Shared aroma: acetic acid (sour, vinegar).
Onion + buttertop 15% of all pairs

Smell alikemoderate

Cooked together42,912 recipes

Shared aroma: decanal (soap, orange peel).
Butter + red winetop 15% of all pairs

Smell alikemoderate

Cooked together1,599 recipes

Shared aroma: ethyl octanoate (fruity, wine).
Sugar + vinegartop 15% of all pairs

Smell alikemoderate

Cooked together20,806 recipes

Shared aroma: beta-damascenone (apple, rose).

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, sugar, red wine, vinegar):

Shallotfits better
Mustardfits better
Capsicumfits better
Onionthe original

Fit is the average pairing score against butter, sugar, red wine, vinegar. Candidates are from the same food group and used in at least 100 recipes.

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