I switched to all grain years ago but came upon a recipe that i really wanted to try. However, it is an extract recipe with steeping grains. I brewed it twice and got a plastic off flavor both times. I use un-adjusted R.O. water and nothing but StarSan touches anything once I start brewing so I know it's not chlorine. I used White Labs WLP001 which I have used several times before with no issues. The only thing I can think of is my plastic fermentation bucket but, again, I have used it before and since without issue. Any help out there?