Tiger nuts

Despite the name, tiger nuts are small tubers of the sedge plant Cyperus esculentus — and like most plain, unprocessed plant foods, they don't go through any histamine-raising process.

• Low by nature — tiger nuts aren't fermented, aged, or heavily processed in their plain dried or raw form, which keeps histamine content low

• Growing in popularity — tiger nut flour and tiger nut milk are becoming more common; plain versions without additives are generally considered similarly low-histamine

Tiger nuts and their derivatives are generally a comfortable choice, particularly as a nut-free alternative.