This gives the same instructions for growing sweet potatoes and normal potatoes.But that method will not work for sweet potatoes, they’re very different from normal potatoes. To propagate sweet potatoes you need to sprout slips from them and then plant those. So half bury the sweet potatoes side ways in some potting mix and wait for sprouts with roots to form on it, twisting those off with roots intacked and growing those. This can also be done by suspending the sweet potato half way in a jar of water with some toothpicks, root end down. Then the sprouts can be planted outside ~3 weeks after the last soil frost.
Sweet potatoes are a completely different family of plants from sweet potatoes, being marigolds rather than nightshades, they don’t bud and spread the same way potatoes do, forming one singular root rather than multiple budding roots.
When I first read the title i saw it as “pouring boiling hot water on it cleared it up” and imagined some part in it cracking due to thermal shock.
Not sure how big of an issue that would really be, depends on the metals in it I imagine. I know a lot of people destroy car windows trying to melt ice off them with boiling water.
A hot water bottle is a much better option, slower heating.