Foods high in Ergothioneine
Every food and ingredient below is ranked by measured Ergothioneine content per 100 g, drawn live from 11 USDA FoodData Central measurements. Values are laboratory-analysed or survey-derived, not estimated.
Top 11 foods highest in Ergothioneine
Ranked by Ergothioneine per 100g, across Foundation Foods and FNDDS ingredients.
| # | Food or ingredient | Source | Per 100g (MG) |
|---|---|---|---|
| 1 | Mushroom, enoki | Foundation Food | 25.8 |
| 2 | Mushroom, king oyster | Foundation Food | 23.6 |
| 3 | Mushroom, pioppini | Foundation Food | 23.2 |
| 4 | Mushroom, lion's mane | Foundation Food | 17.2 |
| 5 | Mushroom, oyster | Foundation Food | 14 |
| 6 | Mushrooms, shiitake | Foundation Food | 11.1 |
| 7 | Mushroom, beech | Foundation Food | 5.38 |
| 8 | Mushrooms, white button | Foundation Food | 4.25 |
| 9 | Mushroom, portabella | Foundation Food | 2.33 |
| 10 | Mushroom, maitake | Foundation Food | 2.25 |
| 11 | Mushroom, crimini | Foundation Food | 1.25 |
More on Ergothioneine
What Ergothioneine is, how it is measured, and where these values come from.
Ergothioneine nutrient reference →Sourced from USDA FoodData Central — Foundation Foods; not yet through an editorial verification pass.
USDA release 2026-04-30. All values are per 100 g unless stated otherwise.