Why it works: Allspice and ginger match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 2,620 recipes. Both carry estragole, which smells anise, licorice. The science ↓
Another Tomata Catsup
Ingredients
Directions
The book says “a cool oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the juice
Place the ripe tomatoes in a jar and bake in a cool oven at 300°F (150°C) until soft enough to press out the juice.
For every gallon of juice, add ¼ pound of black pepper, ¼ pound of allspice, 2 ounces of ginger, 1 head of garlic, and a handful of coarse sea salt.
Cook and strain
Boil all ingredients together, skimming off any scum that rises.
Strain the mixture.
Let it cool completely.
Bottle and seal
Bottle the catsup.
Seal the corks.
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.
-
Allspice + gingertop 1% of all pairsSmell alikestrongCooked together2,620 recipes
Shared aroma: estragole (anise, licorice).
-
Tomato + garlictop 3% of all pairsSmell alikemoderateCooked together14,076 recipes
Shared aroma: furaneol (caramel, strawberry).
-
Pepper + allspicetop 5% of all pairsSmell alikestrongCooked together6,395 recipes
Shared aroma: estragole (anise, licorice).
-
Ginger + garlictop 6% of all pairsSmell alikemoderateCooked together6,402 recipes
Shared aroma: beta-phellandrene (minty, terpene).
-
Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 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
- Ripe tomatoes
- Provide the juice and body that make up the sauce.
- Black pepper
- Adds sharp, aromatic bite to the sauce.
- Allspice
- Adds warm, aromatic spice flavour.
- Ginger
- Adds warm, fresh aroma and a slight bite.
- Garlic
- Adds sharp aroma and savoury depth.
The step that matters
Skim the scum while boiling. Scum that rises during boiling is made of proteins and impurities. Removing it keeps the sauce clear and smooth and stops off-flavours from carrying through.
Swap the tomato
How well each one fits the dish's main ingredients (pepper, allspice, ginger, garlic):
- Carrotfits better
- Broccolifits better
- Eggplantfits better
- Tomatothe original
Fit is the average pairing score against pepper, allspice, ginger, garlic. 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.
More tomato ketchup recipes
You might also like
The 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.
Tomato Soup526 recipes
Cream of Tomato Soup107 recipes
Tomato Bisque61 recipes
Cream Tomato Soup28 recipes