美味し

美味し

"美味し" means "delicious" or "tasty."

Here, 美味しい (oishii) is used as an adjective to describe the taste of the apple.

このりんごはとても美味しいです。

This apple is very delicious.

Here, 美味し (oishi) is combined with the noun-forming suffix 〜さ (-sa) to form 美味しさ, which means 'deliciousness' or 'taste quality'.

美味しさを求めて、新しいレストランを探しています。

I'm looking for a new restaurant in search of deliciousness.

Here, 美味し (oishi) takes the adverbial form 美味しく (oishiku) to describe the manner in which the cooking is done.

美味しく料理を作るには、新鮮な材料が必要です。

To cook food deliciously, fresh ingredients are needed.