Boniato is a variety of sweet potato popular in the Caribbean. It has ruddy pink-red-purple skin and creamy yellow flesh. The flesh is fluffier and less moist than a common orange sweet potato. Its flavor is sweet, but less sugary, and distinctly nutty, strongly reminiscent of chestnut. 
 
Boniato is usually peeled before use. Their flesh will discolor rapidly once exposed to air, so keep any cut pieces submerged in water before and during cooking. Boniato are most often used in mashes and stews.