Name: Roast Vegetable Tray
Prep time: 15 min
Cook time: 55 min
Yield: Serves 6
Ingredients: 4 tbsp olive or vegetable oil; 6 medium carrots , ends trimmed; 6 small parsnips , ends trimmed; 4 small onions; 1 small swede , cut into thick wedges; large knob of butter , to serve

Why it works: Carrot and parsnip match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,097 recipes. Both carry 2-isobutyl-3-methoxypyrazine, which smells green bell pepper, earthy. The science ↓

Roast Vegetable Tray

Serves 6

Prep15 min

Cook55 min

Ingredients

4 tbsp olive or vegetable oil
6 medium carrots , ends trimmed
6 small parsnips , ends trimmed
4 small onions
1 small swede , cut into thick wedges
large knob of butter , to serve

Directions

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

Nutrition, whole recipe (rough)

349Calories

3 gProtein

26 gFat

30 gCarbs

Counts 6 of 7 ingredients. The other 1 aren't in our nutrition table and add nothing above, so the real totals are higher.

What these numbers assume: 6 portions

Ingredient	Portion assumed	kcal
Olive Oil	1 tbsp (14g)	119
Butter	1 tbsp (14g)	102
Parsnip	1/2 cup (78g)	55
Onion	1 medium (110g)	44
Carrot	1 medium (61g)	25
Olive	1 large (4g)	4
Swede	not in our table	0

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.

Carrot + parsniptop 1% of all pairs

Smell alikestrong

Cooked together1,097 recipes

Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
Carrot + oniontop 6% of all pairs

Smell alikemoderate

Cooked together21,601 recipes

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

Smell alikemoderate

Cooked together29,779 recipes

Shared aroma: 2,4-decadienal (seaweed).
Parsnip + oniontop 9% of all pairs

Smell alikestrong

Cooked together1,054 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Olive + carrottop 9% of all pairs

Smell alikemoderate

Cooked together5,861 recipes

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

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, carrot, parsnip, butter):

Turnipfits better
Leekfits better
Beetrootfits better
Onionthe original

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

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