You’re par-boiling because you want that sweet potato just tender enough to finish in the oven, on the grill, or in a skillet. Think of it as a head start. If you’re making roasted wedges, you want the knife to slide in with a bit of resistance—like pushing through cold butter—not all the way through like a hot knife through marshmallow.
For cubes (say, 1-inch chunks), start checking at 7 minutes. For whole potatoes, you’re looking at 12 to 15 minutes, depending on their girth. Pro tip? Use a fork, not a knife. A fork should pierce the flesh easily but still feel a slight tug when you lift it. If the fork goes in and the potato feels wobbly, you’ve overshot.
Size Matters (Yes, It Does)
I know, I know—everyone says "cut them evenly," but you really need to. A half-inch cube cooks in 5 minutes; a two-inch chunk needs 12. Toss them all in together, and you’ll have a mash of overdone mush and underdone rocks. Annoying, right? So chop like you mean it: uniform pieces, same thickness, same fate.
And don’t forget the cold water start. Drop your sweet potatoes into a pot of cold, salted water, then bring it to a boil. This ensures they cook from the inside out, rather than turning into a floury mess on the outside while the center stays raw. Yes, it takes two extra minutes. Your patience will be rewarded.
