90. POTATO PUFF.--Mashed potato combined with egg, seasoned well, and baked in the oven makes a very appetizing dish known as potato puff. This is suitable for any meal at which potatoes would be served.

POTATO PUFF

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Sufficient to Serve Six

)

To the mashed potato, add the celery salt. Separate the egg, beat the yolk, and mix it with the potato. Beat the white stiff and fold it into the potato last. Pile into a buttered baking dish, set in a hot oven, and bake until the potato is thoroughly heated through and the surface is brown. Serve at once.

SWEET POTATOES

91. SWEET POTATOES are used for practically the same purposes as white potatoes, and while these vegetables resemble each other in many respects they are not related botanically, sweet potatoes being root rather than tuber vegetables. Sweet potatoes are of a tropical nature and have been cultivated for hundreds of years in the West Indies and Central America. They form a staple article of diet in the southern part of the United States, where, on account of the warm climate, they are raised abundantly. They are not raised in the North; still they are consumed there in large quantities. After maturing, sweet potatoes are collected and dried in kilns before shipping. While this makes it possible for them to keep longer than if they were not dried, they do not keep so well as white potatoes and therefore cannot be stored in such large numbers. If they are to be kept for a considerable period of time, they should be wrapped separately in paper and stored in a cool, dry place.

92. Sweet potatoes vary considerably in size, shape, and quality. Some are short and blunt at the tips, others are long and cylindrical, either crooked or straight, while others are medium in size and spindle-shaped. Some varieties, which are known as yams, cook moist and sugary, while others, which are simply called sweet potatoes, cook dry and mealy. The kind to select depends entirely on the individual taste, for in composition and food value all the varieties are similar. In composition, sweet potatoes resemble white ones, except that a part of their carbohydrate is in the form of sugar, which gives them their characteristic sweet taste, but in food value they are almost twice as great as white potatoes.