I’ve written previously about how sweet potatoes have a lower glycemic index than white potatoes and are all around healthier than white potatoes. But lately I’ve become aware that there are things we can do to lower the glycemic insult of white potatoes.
If you Google around, you’ll find a number of sources that say that red potatoes are slightly less of a glycemic insult than white potatoes. But even better, when potatoes are cooked and then chilled in the refrigerator for 24 hours, the glycemic index goes down substantially. Boiled red potatoes, chilled and then eaten the next day, can have a glycemic reading as low as 56.
As I understand it, this is not simply because the potatoes are cold. It’s that, as the starch is chilled, the starch chemistry changes its structure so that it’s slower to digest. I believe this change persists even if the potatoes are reheated.
I keep seeing references to new types of low-glycemic potatoes developed by agricultural universities. But so far I have not been able to find a source of these potatoes, either as produce or as seed potatoes for planting.
Carolina church supper potato salad
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