To have the subject better in hand, let us again classify the most important foods:
Flesh foods, which are rich in protein.
Nuts, which contain considerable protein and fat.
Milk and cheese, which contain much protein.
Eggs, taken principally for their protein.
Cereals, the most important contents being starches.
Tubers, containing much starch.
Legumes, rich in protein and starch.
Fresh fruits, well flavored and high in salt contents.
Sweet fruits, containing much fruit sugar.