If you've ever eaten okonomiyaki at a Japanese restaurant and wondered what those pink things dancing on the pancake are – the answer is katsuobushi. And if you've ever wondered what the secret behind miso soups and noodles that taste deep, complex, and completely different from anything you make at home is – you'll find it there too.
Katsuobushi (鰹節, broadly: katsuo = bonito, bushi = dried) is one of the five pillars of Japanese cuisine, and one of the most natural umami concentrates available.
What exactly is Katsuobushi?
Katsuobushi is bonito fish (a type of small tuna) that undergoes a long and patient processing: cooking, repeated smoking, drying, and finally fermentation with natural mold (Aspergillus glaucus) which breaks down proteins and enhances umami. The result is a hard, wood-like piece, rich in inosinate (IMP) — one of the main umami compounds — with a delicate smoky aroma and a deep sea flavor.
What is sold in stores (including ours) is the common version: katsuobushi flakes – the hard fish grated into paper-thin flakes, ready for immediate use.
Why do they "dance"?
The flakes are so thin that the hot air currents rising from the food make them move. This isn't a trick – it's a freshness test: if they move, the dish is hot enough.
Three Main Uses
1. Dashi - Japanese Soup Stock
Dashi is the base for miso soup, ramen, udon, nabe, Japanese stews, and more. It is made by briefly soaking katsuobushi in hot (not boiling) water and then straining – for about 4 minutes, resulting in a clear, bright, and flavorful stock.
Basic dashi (Ichiban Dashi) combines katsuobushi with kombu (dried kelp seaweed) for a combination that synergistically enhances umami – glutamate from kombu + inosinate from katsuobushi = double umami effect.
2. Live Topping - Okonomiyaki and Takoyaki
The flakes are sprinkled directly onto hot okonomiyaki (Japanese pancake) or takoyaki balls before serving. They dance, dance, dance – and add a smoky flavor, depth, and crispy texture.
3. Direct Seasoning
You can sprinkle katsuobushi flakes on:
- Hot white rice (with a few drops of soy sauce – called Katsuo Gohan)
- Cold tofu (Hiyayakko)
- Steamed vegetables
- Cold noodles
What's the Difference Between 20g and 100g?
At Oumame, you'll find two sizes of Makurazaki Katsuobushi - dried and smoked bonito:
- 20 grams - perfect for a first try, for use as a topping on a single dish, or for a small dashi for two.
- 100 grams - for regular cooking, for those who already make homemade dashi regularly.
Both are from the same manufacturer and are thin flakes (katsuobushi hanakatsuo), ready for direct use without further processing.
Recipe: Homemade Dashi in 5 Minutes
Ingredients:
- 10 grams katsuobushi (about half of the small bag)
- 500 ml water
Preparation:
- Heat water to 80°C (not a full boil – scalding the flakes will add bitterness).
- Add the katsuobushi and leave for 3–4 minutes. Do not stir.
- Strain through cheesecloth or a fine sieve.
- The dashi is ready. Store in the refrigerator for up to 3 days.
Uses: Base for miso soup, nabe sauce, cooking rice, ramen stock.
Where to Buy?
Makurazaki Katsuobushi 20g - for a first try
Makurazaki Katsuobushi 100g - for regular cooking
Both are available with same-day delivery to 180+ towns in Israel.
Frequently Asked Questions
Does katsuobushi contain gluten? No. Katsuobushi is pure fish, by definition gluten-free.
Can the flakes be eaten directly? Yes - they are ready for use. No cooking required.
How long does it last? Unopened bag - until the expiration date. After opening - up to a week in an airtight container, away from moisture.
What's the difference between katsuobushi and dashinomoto? Dashinomoto is a ready-made dashi powder (a quick substitute), while katsuobushi is the actual raw ingredient from which fresh dashi is made.
Article: OOMAME Team | Your Asian Market Delivered to Your Home
