《黄帝内经·灵枢·五味》
饮食物中所含的五味，分别趋走于各自喜欢的一脏：酸味的食物首先进入肝，苦昧的首先进入心，甘味的首先进入脾，辛味的首先进入肺，咸味的首先进入肾。
五味各走其所喜，谷味酸，先走肝；谷味苦，先走心；谷味甘，先走脾；谷味辛，先走肺；谷味咸，先走肾。
The five flavors contained in food and drink go to their favorite organs respectively: sour food enters the liver first, bitter food enters the heart first, sweet food enters the spleen first, pungent food enters the lungs first, and salty food enters the kidneys first.