Matcha

Matcha is finely ground green tea — the whole leaf in powder form — so it keeps the low-histamine profile of green tea but delivers caffeine more intensely since you're consuming the entire leaf.

• Whole leaf, more caffeine — because you're drinking the whole ground leaf rather than just steeped water, matcha typically has more caffeine than a cup of brewed green tea; caffeine raises adrenaline, which can produce flushing or jitteriness that overlaps with how histamine symptoms feel

• No oxidation, no added amines — like green tea, matcha isn't oxidized during processing, so it doesn't pick up the biogenic amines found in black or oolong teas; from a histamine perspective it's one of the cleaner options

Ceremonial-grade matcha made with water tends to be simpler on the system than milk-based matcha lattes if you're keeping an eye on variables.