Name: Dean & Deluca's Tuna Sandwich with Carrots, Red Onion, and Parsley
Yield: Makes 6 sandwiches
Ingredients: 4 six-ounce cans drained chunk white tuna in water; 6 tablespoons finely chopped carrots; Half cut plus 1 tablespoon finely chopped red onion; 6 tablespoons chopped fresh parsley; 6 tablespoons finely chopped celery; 3 scallions, finely chopped; One and a half cups of your favorite mayonnaise; 1 small garlic clove, peeled and crushed; 3 tablespoons lemon juice; Salt and pepper to taste; 6 rolls; Lettuce and tomato as accompaniments

Why it works: Carrot and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 8,053 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓

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 + parsleytop 1% of all pairs

Smell alikestrong

Cooked together8,053 recipes

Shared aroma: 2,4-decadienal (seaweed).
Parsley + lemontop 1% of all pairs

Smell alikestrong

Cooked together14,037 recipes

Shared aroma: beta-phellandrene (minty, terpene).
Carrot + celerytop 1% of all pairs

Smell alikestrong

Cooked together10,173 recipes

Shared aroma: myristicin (spice, warm).
Onion + garlictop 1% of all pairs

Smell alikestrong

Cooked together29,058 recipes

Shared aroma: furaneol (caramel, strawberry).
Parsley + celerytop 1% of all pairs

Smell alikestrong

Cooked together6,810 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).

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 (carrot, parsley, celery, garlic, clove, lemon, pepper):

Parsnipfits better
Spinachfits better
Turnipfits better
Onionthe original

Fit is the average pairing score against carrot, parsley, celery, garlic, clove, lemon, pepper. Candidates are from the same food group and used in at least 100 recipes.

Ingredient	Portion assumed	kcal
Salmon	100g cooked	208
Egg	1 large egg (50g)	78
Red Onion	1 medium (110g)	44
Onion	1 medium (110g)	44
Carrot	1 medium (61g)	25
Tomato	1 medium (123g)	22
Lemon	juice of 1 lemon (48ml)	12
Clove	1 tsp ground (2g)	7
Celery	1 stalk (40g)	6
Black Pepper	1 tsp ground (2.3g)	6
Lettuce	1 cup shredded (36g)	5
Garlic	1 clove (3g)	4
Parsley	1 tbsp chopped fresh (3.8g)	1
Salt	1 tsp (6g)	0
Water	not in our table	0

Dean & Deluca's Tuna Sandwich with Carrots, Red Onion, and Parsley