Tarragon

No, tarragon is not high in histamine. It is a fresh, non-protein culinary herb, so it does not give histamine-forming bacteria anything to act on and sits in the low range for most people with histamine intolerance.

Why tarragon is rated low

Histamine forms when particular bacteria break down the protein building block histidine, chiefly during fermenting, curing, aging, or warm storage of protein-rich foods. Tarragon is a delicate fresh leaf that is low in protein and used in small amounts, so none of those processes apply. That is why it lands low and is a handy way to add flavor without the risk that comes with fermented condiments.

What changes your risk

• Freshness — Look for green, springy leaves with that clean anise-like aroma. Once tarragon blackens or turns slimy it is done; discard it rather than picking through.
• Mold — Fresh tarragon holds moisture, so if a bunch shows any mold or a sour smell, throw the whole bunch out instead of trimming around it.
• Dried vs. fresh — Dried tarragon is fine and convenient; keep it sealed and dry so it stays aromatic and does not go musty.
• Tarragon vinegar — The herb is low, but tarragon-infused vinegar is a vinegar product, and vinegar can be a problem for sensitive people. Use the plain herb rather than the infused vinegar.
• Storage — Keep fresh sprigs dry and cold, loosely wrapped, and use within a few days since tarragon wilts faster than sturdier herbs.

What else is safe

Tarragon is a safe choice, and other fresh herbs fit just as well: chervil (its closest flavor cousin), parsley, chives, dill, thyme, and basil are all generally low-histamine. The lookalike to avoid is not another herb but the condiment form: tarragon vinegar and bottled bearnaise or herb sauces that are built on vinegar or aged ingredients. Reach for the fresh or dried leaf instead.

How to enjoy it

Choose bright, fragrant sprigs and add tarragon near the end of cooking so its flavor stays lively. Store the extra in the fridge wrapped loosely in a slightly damp paper towel, and use it within a few days. To keep it longer, chop and freeze the leaves in a little olive oil or water in an ice-cube tray rather than letting a bunch slowly spoil.

Common questions

Is tarragon safe on a low-histamine diet?

For most people, yes. As a fresh, low-protein herb it does not build histamine and is a good way to flavor chicken, fish, and eggs.

What about bearnaise sauce made with tarragon?

The tarragon is fine, but classic bearnaise is built on a vinegar reduction, and vinegar can trigger symptoms in sensitive people. The herb is not the concern; the vinegar base is.

Can I use dried tarragon instead of fresh?

Yes. Drying does not create histamine, so well-stored dried tarragon is fine. Just avoid any jar that smells musty or looks like it has taken on moisture.