its sort of a tip of the tongue kind of mild bitterness. in all other regards when i make bread i am very happy with the results. i get a nice moist fluffy sort of texture. i even get mostly the flavor i want , but there is an underlying bitterness i would like to get rid of. i use recipes, but mostly as a guide, i always end up altering in some way, such as putting pumpkin , fruit, leftover rice, a different flour, etc in the dough. . i was wondering if there is too much yeast when the bitterness happens? i use about 2 tsp. per loaf, which is right accoring to the recipes i use. but maybe the recipes are too yeasty? anyone know?