I am wondering: how much carbs do lacto fermented potatoes contain? Or how would one determine that?
Context
I am into keto diet since it has been like a miracle when it comes to weight loss for me in the past and it's just about time for me to come back to it. I am trying to make it more interesting than fried meat with cheese and mayonnaise this time and I know that during lacto fermentation carbs are consumed by bacteria. I have tried lacto fermenting pickles and it was extremely easy with really great results - I just added 2.5% (of total weight) salt to pickles in water weighted them down so they don't rise above water and forgot it for a few weeks and it all turned out really well. So now I am thinking about how much I like fried potatoes and if I could just ferment them in exactly same manner to get rid of the carbs. I would use the same process with 2.5% salt with peeled and sliced (and well washed) raw potatoes. I am wondering how sure I can be that most of carbs would be gone after this process.
I would appreciate any extra advice on the whole process, but keeping in mind the style of Stack Exchange platform I am looking for an answer about carbohydrate amount based on facts or direct experience(I have no idea how testing or calculating these things work).