SH sweet corn is prized for its remarkable sweetness. The "SH" designation in SH sweet corn stands for "shrunken-2," which refers to the genetic trait responsible for the corn's enhanced sweetness. This trait causes the kernels to be plumper and have a higher sugar content. And, thanks to the makeup of starch in this corn, you'll find that it lasts longer than standard sweet corn, and can be used fresh over a week after picking.