My mom gave me this nice sweet potato. From the super market. I find it really hard to get these to sprout. I love to grab one that is sprouted. I put it in a pot. It'll go on the kitchen window sill. They grow slow, then fast.
I've heard of gardeners who start their own sweets having the kitchen window covered with vines by planting season. Well, that would be fun. Last year I bought 12 slips and they weren't cheap (though I forget how much they were - $25 maybe). Maybe some of mine will sprout, at least they weren't treated with sprout inhibitor like the supermarket ones are. I'll watch them.