Weve been trying our hands at cheese this year and really enjoy it . Weve made cottage cheese, ricotta , mozzarella ,cream cheese. and have had pretty good luck at . but we have a problem with mozzarella , every once in a while we get a batch that is really bad tasting and has a smell like baby barf. We use a recipe from home cheese making by Ricki Carroll a great book , we use the 30 minute recipe. We fallow the recipe to the tee but sometimes the cheese is gross. we drink the milk and it tastes great so I dont think its the milk. We use Marschall rennet tablets and citric acid (anhydrous). we also use stainless steel pans and spoons and floating glass thermometer. does anyone have ideas ?????