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Soup

Philadelphia Pepper Pot

A hearty soup of tripe, calves’ feet, pepper, herbs, onions, potatoes, and egg balls.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 12 ingredients
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Why it works: Marjoram and thyme match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 2,225 recipes. Both carry terpineol, which smells pine, woody. The science ↓

Philadelphia Pepper Pot

Ingredients

Directions

Prepare the base

  1. Place the tripe and calves’ feet in a soup pot and cover with cold water.

  2. Add the red pepper and boil until the calves’ feet are very tender.

  3. Remove the meat, skim the liquid, and stir it.

  4. Cut the tripe into small pieces and return it to the liquid.

  5. If needed, add boiling water to maintain liquid level.

Finish and serve

  1. Add the marjoram, basil, thyme, onions, potatoes, and salt.

  2. Boil until the vegetables are almost tender.

  3. Incorporate the butter rolled in flour and drop in the egg balls.

  4. Boil for an additional 15 minutes and serve hot.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

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.

  1. Marjoram + thymetop 1% of all pairs
    Smell alikestrong
    Cooked together2,225 recipes

    Shared aroma: terpineol (pine, woody).

  2. Marjoram + basiltop 1% of all pairs
    Smell alikestrong
    Cooked together688 recipes

    Shared aroma: terpineol (pine, woody).

  3. Basil + thymetop 1% of all pairs
    Smell alikestrong
    Cooked together1,768 recipes

    Shared aroma: terpineol (pine, woody).

  4. Pepper + marjoramtop 3% of all pairs
    Smell alikestrong
    Cooked together2,609 recipes

    Shared aroma: estragole (anise, licorice).

  5. Onion + potatotop 3% of all pairs
    Smell alikemoderate
    Cooked together9,023 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

Tripe
Provides the chewy, gelatinous body that makes the soup substantial.
Calves’ feet
Release gelatin into the liquid, giving the broth body and a silky mouthfeel.
Butter rolled in flour
Flour and butter thicken the broth as they cook, giving it a smoother body.
Potatoes
Soften during simmering, adding starch that gives the broth more body.
Onions
Break down while simmering, adding sweetness and savory depth to the broth.

The step that matters

Incorporate the butter rolled in flour. Flour clumps if dropped in raw. Whisk or stir it in gradually so the starch disperses and thickens the broth evenly without lumps.

Swap the onion

How well each one fits the dish's main ingredients (pepper, marjoram, basil, thyme, potato, butter, flour):

  1. Carrotfits better
  2. Shallotfits better
  3. Parsnipfits better
  4. Onionthe original

Fit is the average pairing score against pepper, marjoram, basil, thyme, potato, butter, flour. 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.

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