I have had a helluva time trying to make a stable sour starter with my Baking mix. Even with faithful feedings I find it starts to smell awful and simply doesn't have enough oomph to raise a loaf on its own. So I got sneaky. I began with a healthy all purpose flour starter. Instead of feeding it AP flour and water, I fed it Ketonia Baking Mix and water. Since after the first feeding I discard half the starter with each feeding, it takes only about a week before the starter becomes a full keto starter! It still needs a bit of yeast to get a good rise for bread, but it's delicious as a sourdough cracker! You will need to get hold of 4 ounces of fresh, bubbly sourdough starter. After 2 years of quarantine, it shouldn't be too hard. If all else fails, King Arthur Flour sells a starter mix! Here is the feeding schedule. Cracker recipe will follow!