Shiitake Mushroom vs Shimeji Mushroom
What's the difference between shiitake and shimeji?
The two most essential mushrooms in Japanese cooking. Both are low-calorie and umami-rich, but they differ in flavor profile and best cooking applications.
Nutrition (per 100g)
| Nutrient | Shiitake Mushroom | Shimeji Mushroom |
|---|---|---|
| Calories | 25kcal | 18kcal◎ |
| Protein | 3g◎ | 2.7g |
| Fiber | 4.2g◎ | 3g |
| Vitamin C | 10mg◎ | 7mg |
| Iron | 0.3mg | 0.5mg◎ |
| Calcium | 1mg | 1mg |
| Potassium | 280mg | 380mg◎ |
| Beta-carotene | 0μg | 0μg |
| Folate | 44μg◎ | 28μg |
Source: Standard Tables of Food Composition in Japan (8th ed.) 2020
Price Comparison
Shiitake Mushroom
Annual average (2026)
Shimeji Mushroom
Annual average (2026)
Peak Season
| J | F | M | A | M | J | J | A | S | O | N | D | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Shiitake Mushroom | ○ | ○ | Peak | Peak | ○ | △ | △ | △ | ○ | Peak | Peak | ○ |
| Shimeji Mushroom | ○ | ○ | △ | △ | △ | △ | △ | △ | ○ | Peak | Peak | ○ |
Storage & Flavor
Shiitake Mushroom
Flavor
Distinctive aroma and deep umami flavor. Heating increases guanylate, a key umami compound
Shelf Life
1 week refrigerated, 1 month frozen
How to Select
Choose thick caps that aren't fully opened. White, clean gills on the underside indicate freshness
Shimeji Mushroom
Flavor
Known for rich umami — a Japanese saying ranks its flavor alongside matsutake. Becomes firm and bouncy when cooked
Shelf Life
1 week refrigerated, 1 month frozen
How to Select
Choose bunches with small, tightly packed caps and white, firm stems
Verdict
Shiitake has bold umami and works as a star ingredient or dashi base. Shimeji is mild and versatile — the perfect supporting player. Both get more umami when frozen, so buy in bulk and freeze.
FAQ
Which has more umami?
Shiitake, with its abundant guanylic acid. Dried shiitake concentrates umami dramatically — prized for dashi stock.
Which is easier to use?
Shimeji wins — just break apart and toss in. No stem trimming needed, and its mild flavor suits any dish. Shiitake needs stem removal but rewards with bold, meaty flavor.
How do they differ nutritionally?
Calories are similar (shiitake 25kcal, shimeji 18kcal per 100g). Shiitake is rich in ergosterol, which converts to vitamin D when exposed to sunlight.