かつお

In a sentence

• かつおは日本の料理に欠かせない食材です。

  Katsuo (bonito fish) is an indispensable ingredient in Japanese cuisine.

  Here, "かつお" is used as a noun referring to bonito, a type of fish commonly used in cooking for its flavorful qualities.

• 彼が釣ってきたかつおは、とても新鮮でした。

  The bonito that he caught was very fresh.

  In this sentence, "かつお" is used specifically to describe a freshly caught instance of the fish, emphasizing its quality.

• だしを作るためには、かつお節が必要です。

  To make soup stock, katsuobushi (dried bonito flakes) is essential.

  Here, "かつお節" (katsuobushi) is a derivative term of "かつお", referring to the dried and processed form of the fish used as a flavoring.