I've heard people using particular recipes for cake sealers and then I've heard of people using just a simple syrup. I've tried the simple syrup for just cakes around the house and after a couple days of the cake sitting, the bottom layer of cake is completely saturated with sugarwatery syrup. It leaks out into the cake plate it's so bad. I thought maybe I was putting to much on, but really I only use a couple tbsp per layer. I don't know for sure what to do. Does anyone have cake sealers they particularly love using?? Thanks!
If you're looking for something to bathe the cake in, I unfortunately don't have an answer to this question, but would like to know it as well. If you're interested in sealing in the moisture and freshness of an already moist cake, a layer of ganache and/or fondant does wonders, and the cake stays fresh for days or even weeks.