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Watchi

A Ghanaian dish of black‑eyed peas and rice topped with a tomato and onion sauce.

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Why it works: Black-eyed pea and rice work together. They rank in the top 3% of all ingredient pairs, and 40 recipes mention both. Both carry coumarin, which smells sweet, hay. The science ↓

The recipe

Timeabout 1 hour

Ingredients

Contains: wheat (auto-detected from the ingredients and method; we can miss things, so check labels)

  • SAUCE

Directions

Cook the peas

  1. Discard soaking water and rinse peas.

  2. Refill pot with fresh, cold water to cover peas to a depth of 2 to 3 inches.

  3. Add bay leaf and kombu if desired.

  4. Bring to a boil.

  5. Reduce heat and simmer peas gently with pot cover ajar until tender, about 1 hour.

  6. Add more water if necessary.

  7. Water should be nearly evaporated at end of cooking time.

  8. Discard bay leaf and kombu.

  9. Add cooked rice, salt and pepper to taste at end of cooking time.

Make the sauce

  1. Heat oil in skillet.

  2. Add flour and mix to make roux.

  3. Cook over low heat, stirring constantly until roux browns slightly, about 2 minutes.

  4. Add onion and cook until browned.

  5. Add tomato paste and nutmeg; stir until well‑mixed.

  6. Add water to desired consistency (sauce should be thick and not too soupy).

Serve

  1. Serve over Waachi.

Recipe from the Recipes Wiki (Fandom).

This recipe comes from the Recipes Wiki on Fandom and is licensed CC BY-SA 4.0. Our formatting and summaries are shared under the same licence.

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 aroma chemistry they share, and how many recipes mention both.

  1. Black-eyed pea + ricetop 3% of all pairs
    Aroma overlapmoderate
    Mentioned together40 recipes

    Shared aroma: coumarin (sweet, hay).

  2. Rice + wheattop 4% of all pairs
    Aroma overlapstrong
    Mentioned together409 recipes

    Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).

  3. Black-eyed pea + peppertop 5% of all pairs
    Aroma overlapmoderate
    Mentioned together150 recipes

    Shared aroma: coumarin (sweet, hay).

  4. Canola oil + oniontop 5% of all pairs
    Aroma overlaplow
    Mentioned together1,150 recipes

    Shared aroma: coumarin (sweet, hay).

  5. Rice + oniontop 5% of all pairs
    Aroma overlapstrong
    Mentioned together9,990 recipes

    Shared aroma: guaiacol (smoky, sweet).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Black-eyed peas
Provide the main body and protein of the dish as they soften during simmering.
Brown rice
Adds bulk and chewy texture, absorbing flavour as it is mixed into the peas.
Whole wheat flour
Forms a roux with the oil that thickens the sauce and adds a toasted, nutty note.
Onion
Browns in the oil to add sweetness and savoury depth to the sauce.
Tomato paste
Concentrates tomato flavour and colour and adds body to the sauce.

The step that matters

Brown the roux gently. Cooking flour in oil over low heat, stirring constantly, toasts it evenly. Higher heat or inattention can scorch the flour, leaving a bitter taste and dark specks in the sauce.

Flavor stand-ins for the black-eyed pea

How well each one fits the dish's main ingredients (kombu, rice, pepper, canola oil, wheat, flour, onion):

  1. Sesamebetter flavor fit
  2. Beansbetter flavor fit
  3. Peanutbetter flavor fit
  4. Black-eyed peathe original

Fit is the average pairing score against kombu, rice, pepper, canola oil, wheat, flour, onion. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).

“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.

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