Niboshi

The "Bushi" and the "Niboshi" are the main most suitable ingredients for the Dashi and soups.
Niboshi, characterized by a light aroma, allows to make a rich and tasty Dashi.
The process of manufacturing the Niboshi is relatively simple: small fish are boiled in salt water (for cooking and activating enzymes that facilitate drying and developing aromas), then dried thoroughly.
To get the best flavor possible, it is often recommended to remove the head and bowels from the Niboshi before preparing the Dashi. These parts can give a bitter or too hard taste and make the Bouillon Dashi Trouble. However, for very small niboshi (like Kaeri) or high quality, this step is sometimes omitted. Some cooks also slightly grill dry niboshi in a skillet before using them to raise the aroma and mitigate any persistent fish flavor.

Prepare your Niboshi Dashi:

1 liter of freshwater and 30g of Niboshi
• Remove the head and bowels from dried fish. This reduces bitterness.
• Soak the Niboshi in the amount of water indicated all night.
Transfer niboshi and soaking liquid into a small saucepan and slowly boiling water. Fying the liquid surface, reduce on low heat and cook for 8 to 10 minutes.
Drain in a fine colander above a bowl or measuring glass. The Dashi is ready.
You can also use, to make your Dashi, the Niboshi Atsukezuri, critical version of the Niboshi. This version will allow you to make more powerful and colorful Dashis.

Niboshi's Dashi has a flavor and aroma of strong and distinctive fish, often more pronounced than those of the Katsuobushi Dashi. It is less smoked and often described as having a richer and more "oceanic" taste. The main UMAMI component is also here inosinic acid (may also contain glutamic acid).
Niboshi's Dashi is a basic ingredient in many Japanese kitchens, especially for miso soup, noodle soups (Udon, Soba, Ramen) and simmered dishes (Nimono).