可口
kě koǔ · HSK 7
tasty
😋 可口 = 可 (can/worthy) + 口 (mouth) = worthy of the mouth = tasty
Both characters are everyday building blocks: 可 means can or worthy, 口 means mouth. Together they literally say a food is worthy of your mouth, which is exactly what tasty means. Bonus: 可口可乐 is the brand name Coca-Cola.
可 — mouth 口 + breath marker 丁 (modified)
可 originally depicted a mouth (口) with a curved stroke suggesting exhaled breath or speech, conveying approval or assent. From this came the meaning 'to permit' or 'can,' as granting permission was expressed verbally. Today it broadly means 'may,' 'can,' or 'approve.'
口 — pictograph of an open mouth
口 is one of the oldest pictographs in Chinese, originally drawn as a simple outline of an open mouth. Its core meaning 'mouth' extended naturally to 'opening' or 'entrance', as in 入口 (entrance). It also serves as a common radical in characters related to speech, eating, or apertures.