山梨酸钾

• 山(mountain)ASSOCIATIVE

Three mountain peaks jutting upward resemble a majestic mountain range before your eyes.

• 利(sharp; benefit)PHONETIC
• 木(wood; tree)RADICAL

A pear tree (wood) bears fruit so deliciously sharp and sweet it cuts like a blade (sharp/keen).

• 酉(wine vessel; ferment)RADICAL
• 夋(slow manner; leisurely pace)PHONETIC

Fermenting alcohol produces sourness, which is exactly the character for sour.