A piece of raw potato of the same size would shrink even more, but would give a hotter and cleaner flame.

A leaf of cabbage, or a piece of beet-root, or four or five large strawberries would shrivel away in the drying almost to nothing and, if thoroughly dried, would disappear in a flash when thrown on the fire.

These, then, except the potato, we should regard as Kindling foods.
But it would take a large handful of lettuce leaves, or a big cup of beef-tea, or a good-sized bowl of soup, or a big cucumber, or a gallon of tea or coffee, to leave sufficient solid remains when completely dried, to make more than a flash when thrown into the fire.

These, then, are Paper foods, with little fuel value..