If using whey or the Body Ecology starter (a narrow-spectrum starter—similar to what is used by the food industry based in dairy bacteria) are less than 50%. I’m including a recipe for fermented fries, but you can also ferment potatoes to be used for mashed, roasted quarters, or for making pancakes. Be creative! Keep in mind that the more surface area that is exposed, the higher amount of starch can be released. You can ferment whole potatoes but I recommend making sticks our chopping them into quarters.I find that digestive wise, red potatoes, yams and sweet potatoes tend to be the best options for those with sensitive digestion or blood sugar regulation issues. And of course, I always recommend serving these with lots of good fat (duck fat, lard, ghee or coconut oil are all good options).