I am trying my luck at retrograding mashed potatoes. I will know how it well I did at lunch time today.
Here is what I have done:
Cut up 3-4 small Russet potatoes into 1/2 inch cubes. Placed in a large pot with lots of water. Boiled them until they were soft enough to mash.
Drained the water, added butter, half/half, salt pepper and a small amount of Rice vinegar (to help retrograde the starch).
The hardest part of this recipe is not eating the hot mashed potatoes, I did taste them, (it was burst of all the holidays past)
I have read that the retrograding process has to take place in the refrigerator, and can be as high as 30%. So if you have cup of potatoes that has 17g of carbs, and you retrograde 30% of them you now have about 12g carbs, along with the fat from the butter and half and half.
I will heat one cup of these at lunch time and let you know what happens.
Below is just one paper that has been written about retrograded starches (potatoe) if you are interested.
ScienceDirect - Carbohydrate Polymers : Resistant starch formation in temperature treated potato starches varying in amylose/amylopectin ratio