Sourdough Bread Starter Smell? My sourdough starter smells buttery, is this ok, or should I start over with my starter?  I have made the starter with organic whole wheat flour and water.  It is approximately 3 weeks old and I’ve made several batches of bread.  It is just starting to have a buttery smell.  Don’t know if the starter has been contaminated with another bacteria or if this might be normal.
I would only worry about this if the starter began producing off tasting/smelling bread. My starters have always smelled somewhat of alcohol though so I might worry if it stopped smelling at least a little like that.