Do you have any tips for sourdough? A recipe? My roommate tried 3 times and ended up with a complete sour mess...
One non-intuitive thing with sourdough -- more starter usually means less sour bread. The yeast grows more quickly than the lactobacillus which makes it sour. So if grow up a larger amount of starter and use twice as much starter, and adjust down the flour&water to compensate, the bread will rise faster, the lactobacillus will have less time to do their thing, and the bread will have a milder taste.
If there's a clear liquid on top of the starter before feeding it, skim it off before beginning the feed/discard process. Also, leaving it to feed for too long with not enough fresh food will cause it to be more sour--feed more often to reduce sour taste