Is Firehouse Subs Catering Salad Chopped High in Histamine?

Firehouse Subs Catering Salad Chopped

High histamine

This chopped salad is high in histamine because of the tomatoes, kalamata olives, and peppers.

Food here is usually assembled to order from components that were prepped earlier in the day, so it tends to be fresher than a drive-through and less fresh than cooking at home. Histamine builds up as protein foods sit, so how long the chicken or beef has been in the warmer matters as much as what is in the bowl. Treat the rating above as a starting point.

Histamine Liberator Dairy

It is a mix of lettuce, cucumber, mozzarella, and several higher-histamine add-ins.

Tomatoes and kalamata olives — tomatoes are a classic histamine liberator and the cured olives are high, so together they set the level.
Green peppers and pepperoncini — both land moderate, with the pepperoncini higher because it is pickled.

The lettuce, cucumber, and fresh mozzarella are the calm parts, so leaning on those keeps things lower.

This rating comes from Firehouse Subs' own published ingredient statement, read on August 11, 2026. Restaurant recipes vary by location and change over time, so always check the current listing: source 1, source 2. How we rate foods →

Firehouse Subs Catering Salad Chopped and Firehouse Subs are trademarks of their respective owners. This page is an independent histamine reference and is not affiliated with, endorsed by, or sponsored by the brand.