So I usually use "Substance WPI" (grape flavor) whey protein from bulknutrition and I just recieved my 3rd jug of this stuff. The other two tasted perfectly fine and in fact, they actually tasted kinda good. This third jug I bought though has a really terrible taste to it. Its like the grape flavor is still there, but there is other horrible taste in there that I cannot describe... tastes like mold or something. I thought I could just push through it but after mixing 3 drinks so far it is just intolerable! I paid $30 shipped for this stuff and I am kinda pissed. I have only been using Substance WPI from bulk nutrition for a few months now.... is this a normal occurance when using this stuff (getting a bad batch)? Should I just Email bulk nutrition and explain my situation and try to get some new stuff sent out?