黄原酸盐

• 黃(yellow; ripe grain field)ASSOCIATIVE

A mature golden rice plant with its stalk, roots, and heavy drooping grain panicles forms the image of this character.

• 厂(rock cliff; eaves)RADICAL
• 泉(source stream; spring)ASSOCIATIVE

Water flowing from beneath a cliff of stone is the original source.

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

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

• 圤(earth; mineral (hint: rock salt))ASSOCIATIVE
• 皿(bowl; container)RADICAL

Salt is a mineral from the earth held in a bowl.