It's happened to me half a dozen times at least... Over several year period of time.. batch after batch after batch.. It shows up as a white powder You can brew a hundred grams of it, It's smooth as butter and you can put it in the safe or wherever you store your stuff and it'll stay smooth as butter till you use the last drop, but that part that you didn't use that you store somewhere, when it melts it turns yellow like Vaseline, And if you try to chill it in the freezer, It doesn't get hard and recrystallize It just turns into cold Vaseline, a yellow pliable solid.. as soon as you brew that stuff it'll have you walking funny for a week wherever you inject it.. I went through it for years and years... And then I spent about a month searching through this forum and basically everything I said is spelled out in plain English on here, It just helps me connect the dots... I just kept getting the same thing happening over and over and I couldn't figure out why the first stuff I made was perfect and the second stuff was always trash, eventually I wised up and just quit buying it and started buying cypionate. If you search on here long enough you'll find everything I just said verified by dozens of people, The post go back for years and years and it's the same problem with person after person