
Elevated risk
Walnut ketchup
A dark liquid seasoning made from young green walnuts steeped in salt and vinegar, then boiled with spices, shallots and anchovies. It belongs to the British ketchups of the 1700s and 1800s.
1504 records with their sources, across 11 categories.
Fermented, enzyme-ripened and mixed seasonings3
Vegetable lactic2
Acid and oil pickles1
Garum and fish sauces1
Legume, seed and plant-protein ferments1
A dark liquid seasoning made from young green walnuts steeped in salt and vinegar, then boiled with spices, shallots and anchovies. It belongs to the British ketchups of the 1700s and 1800s.

A dark, salty fermented condiment of the medieval Arabic kitchen, made from fermented barley and flour, which seasoned dishes where later cooks would use soy sauce, salt or sumac.

Japan's standard all-purpose soy sauce: soybeans and wheat grown over with koji mould, brined, fermented for months, pressed and usually heated into a reddish-brown, savoury liquid.