Kitap 2
18
Not only is there differentiation in the classes of nutriments, but also as much in the actual species of nutriment; which is due both to age and part of the animal and to soil and to climate and to habit. For every four-footed animal yields less nutriment while it is a suckling, likewise a chicken in a coop, the more tender it is; also a half-grown fish, which has not filled out to its full size. Then likewise in the same pig, trotters, chaps, ears or brain, in a lamb or kid the whole head, also the pettitoes, are somewhat less nutritious than other parts, and so can be placed in the middle class. In birds, the neck and wings are rightly counted as weak nutriment. As regards soil, grain is also more nutritious grown in hilly than in flat districts; fish living among rocks are less nutritious than those in sand, and these again less than those in mud. Hence it is that the same classes of fish from a pond or lake or river are heavier, and those which live in deep water are lighter food than those which live in shallows. Every wild animal is a lighter food than the same species domesticated, and the product of a damp climate is lighter than that of a dry one. Again, all kinds of fat meat have more nutriment than lean, fresh meat than salted, recently killed than stale. Then the same meat is more nourishing stewed than roasted, more so roasted than boiled. A hard-boiled egg is a very substantial material, a soft cooker or raw egg very light. And while all bread-stuffs are among the most solid, yet some kinds of grain after being soaked, such as spelt, rice, pearl barley, or the gruel or porridge made out of these, and also bread soaked in water, can be reckoned among the weakest of food.
