I have noticed in alot of my cakes that they often have a oily ring around them. I buy my icing in bulk (Sams), could this be the problem. Or is there something I should be doing different?
Do you cover your cakeboards? I use Glad Press N Seal to cover my cakeboards before placing any cake on top. If the board is the bottom presentation board, I cover with FanciFoil or fondant.