Why it works: Lemon and pepper match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Rwanda Beef Stew
Ingredients
Directions
Brown the base
Brown the beef and the onion in the oil in a heavy casserole.
Rub the plantain slices with the lemon juice and add them to the browned beef and onions.
Cook for 5 minutes over low heat, stirring constantly to make sure they do not stick.
Simmer
Add the remaining ingredients and water to cover.
Cover the casserole and cook over low heat for 1 1/2 to 2 hours.
Add more water if needed, and stir occasionally so the ingredients do not stick.
Nutrition, whole recipe (rough)
Counts 7 of 8 ingredients. The other 1 aren't in our nutrition table and add nothing above, so the real totals are higher.
What these numbers assume: 7 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Beef | 100g cooked | 250 |
| Peanut Oil | 1 tbsp (14g) | 119 |
| Onion | 1 medium (110g) | 44 |
| Tomato | 1 medium (123g) | 22 |
| Lemon | juice of 1 lemon (48ml) | 12 |
| Black Pepper | 1 tsp ground (2.3g) | 6 |
| Salt | 1 tsp (6g) | 0 |
| Plantain | 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.
Steps grouped into stages for easier reading; the method is the source's own.
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.
-
Lemon + peppertop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Beef + oniontop 7% of all pairsSmell alikemoderateCooked together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Beef + tomatotop 8% of all pairsSmell alikemoderateCooked together5,448 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked 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
What each ingredient does
- Stewing beef
- Provides the main protein, which becomes tender through long, slow cooking in liquid.
- Green plantains
- Thicken the stew as their starch softens and partly breaks down during simmering.
- Lemon juice
- Adds acidity that brightens the stew and helps keep the cut plantain slices pale.
- Onion
- Adds savory sweetness as it softens and browns in the oil at the start.
- Tomato
- Adds acidity, moisture and savory depth as it breaks down into the sauce.
The step that matters
Stirring the plantains during the first 5 minutes. Plantain starch sticks to the hot casserole base. Constant stirring over low heat keeps the slices from scorching, while the later occasional stirring prevents sticking as the stew thickens.
Swap the lemon
How well each one fits the dish's main ingredients (beef, onion, peanut oil, tomato, pepper):
- Avocadofits better
- Limefits better
- Coconutfits better
- Lemonthe original
Fit is the average pairing score against beef, onion, peanut oil, tomato, pepper. Candidates are from the same food group and used in at least 100 recipes.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
You might also like
Tomato Soup526 recipes
Lemon Sauce236 recipes
Roast Beef211 recipes
Beef Loaf175 recipesThe free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.