Fenugreek

Fenugreek seeds and leaves don't appear to raise histamine levels in any well-documented way.

• Used in spice blends — fenugreek often appears in curry powders and spice mixes, so how it's used matters; the other ingredients in a blend may be more relevant than fenugreek itself

• Individual variation — a small number of people with broader food sensitivities report reacting to fenugreek, though this isn't tied to a clearly established histamine mechanism

Starting with small amounts is a sensible approach if you haven't used it much before.