Are IHOP Cooked Mushrooms High in Histamine?

IHOP Cooked Mushrooms

Moderate histamine

IHOP Cooked Mushrooms are moderate, driven by the mushrooms themselves and the soybean oil blend.

Most of this is cooked to order, which is the best case for histamine. Even so, a restaurant kitchen preps ahead and holds things warm through a service, so freshness varies more than it would at home. The rating above comes from the chain's published ingredients. If a dish is borderline for you, asking how it is prepared tells you more than the menu does.

This is a simple side of mushrooms cooked in a seasoned oil blend, and it lands at moderate.

Cooked mushrooms — mushrooms tend to run moderate in histamine on their own, so they set the tone here regardless of how they are prepared.
Liquid and hydrogenated soybean oil — the oil blend they are cooked in also sits at moderate, which keeps the dish from dropping into low territory.

If you want a gentler side from the same style of menu, plain fresh vegetables or hash browns tend to sit lower.

This rating comes from IHOP's 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 →

IHOP Cooked Mushrooms and IHOP 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.