
Kombu Dashi is a foundational Japanese soup stock made by steeping dried kelp (kombu) in water, often with optional bonito flakes (katsuobushi) for added depth. It serves as the umami-rich base for countless dishes, from miso soup to noodle broths, and is a cornerstone of Japanese cuisine.
Kombu Dashi is virtually fat-free and very low in calories, typically providing only 5-10 calories per cup. It is a notable source of minerals like iodine and calcium, and contains glutamate, an amino acid that delivers a savory umami flavor.
| Calories | 10 kcal |
| Protein | 0.5 g |
| Carbs | 2 g |
| Fat | 0 g |
| Fiber | 0 g |
| Sugar | 0 g |
| Sodium | 350 mg |
| Iodine | 300 mcg |
| Calcium | 30 mg |
| Magnesium | 15 mg |
| Potassium | 100 mg |
| Iron | 0.5 mg |
| Vitamin B2 | 0.05 mg |
| Vitamin B6 | 0.02 mg |
| Vitamin B12 | 0.1 mcg |
Per 1 cup (240 g) · estimated, varies by recipe
Culturally, Kombu Dashi embodies the Japanese principle of 'dashi' as the 'fifth taste' (umami), which was scientifically identified in 1908. Nutritionally, the kombu used is rich in alginic acid, a soluble fiber that may aid digestion and help moderate blood sugar levels.