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The sweet potato (Ipomoea batatas), a member of the morning glory family, Convolvulaceae, is a grown for its tuberlike roots. Native to the American tropics, it is rich in vitamin A. Europeans brought back the plant to their continent in the 16th century and it later spread to Asia. About 4 to 5 months of warm weather are required for adequate yields. All varieties have long vines, often exceeding 3m (10ft). Most sweet potatoes are propagated by planting root sprouts or vine cuttings. Properly stored, disease-free roots can remain edible for 6 to 7 months.
The edible tuberous root is long and tapered, with a smooth skin whose color ranges between yellow, orange, red, brown, purple, and beige. Its flesh ranges from beige through white, red, pink, violet, yellow, orange, and purple. Sweet potato varieties with white or pale yellow flesh are less sweet and moist than those with red, pink or orange flesh.
Sweet potatoes aren't started by seed like most other vegetables, they're started from slips. Slips are shoots that are grown from a mature sweet potato.
Sweet potatoes are so willing to grow that plants accidentally dropped on the ground will take off and grow when tucked into warm, moist soil. Plant sweet potatoes about 12 inches apart, and allow 3 feet between rows so the vines will have plenty of room to run. When setting out sweet potatoes in very hot, sunny weather, cover the plants with upturned flower pots for 3 days after planting to shield them from baking sun.
Another way to grow slips is to place several sweet potatoes in a bed of sand covered with a moist layer of more sand five centimeters thick. Once the shoots start to grow, add an additional 2.5 centimetres of sand, keeping it moist but not waterlogged and between 15 and 27°C. Slips should reach 20 centimetres in about six weeks.
Hot cake are a type of flatbread prepared from a sweet batter that is cooked on a