Third generation Starter fed with potato flakes and a weird happening
I have a starter that was given to me. It has been in the family for a long time, third generation. The directions that I have, say to feed it with potato flakes. I have been doing everything and the bread has been turning out great. IO have had some experimenting to get the finer points tuned in, and after the bake this morning I am very close.
The thing i am having an issue with just dumbfounds me. My starter is TWO cups worth. I use a cup to bake with or discard the cup when I feed, usually ever 3-4 days. this is what is weird. So I will measure out one cup. When I go to add the new feed, it will make more than one cup. I know i am only using a cup of water and I know that there is only one cup left of the starter. I have tried it two different ways, it seems like when I just add the sugar, potato flakes and water separately, it equals out to more than two cups. When I mix the sugar and warm water and stir, then add the water sugar mixture and flakes to the old starter, it doesn not have that problem.
I hope this was not too confusing, it defies the law of science, but it is happnening and I am confused. Some one help me out here. Also when this happens I have been pouring out the excess starter so that it equals two cups.. Should I being doing this. Suggestions are appreciated.
Also, the taste of the bread, consistency or rising have not been effected at all.