It's best to keep the frozen stuff from ever warming up. So that means you can cum directly in it, but you better not take it out of the freezer until the moment you are about to cum. I've done that. But what I usually prefer is to have a CLEAN (ALWAYS CLEAN) container that I cum into then with no delay run over to the freezer and empty it into my freezer container (which was also squeaky clean from the start).
Rules:
- Cleanliness - clean containers, don't put containers on meat, give them their own dedicated clean spot in the freezer.
- Temperature - keep is solidly frozen until you are ready to use it. Never let it warm or thaw.
- Air tight - use the best sealing container you can. You are also better off using multpiple small containers instead of one big one. A big one will have a ton of air in it until it is nearly full, which will take a LONG time. A small container will not have this issue. Also, I prefer to take the "cum cube" out of the small container as soon as it is full and vacuum seal it with a Food Saver, then put it back in the freezer. It keeps for a LONG time this way.
Bonus points for my method:
- Small batches makes it easy for us to decide how much we want to play with. Want a little? Take out one batch. Want a lot? Take out 5 batches.
- Vacuum sealed cum allows us to thaw it by placing the vacuum sealed bag in room temperature water. It takes 10-30 minutes depending on the size of the cum block, but doing it this way results in thawed cum that is still white, thick, and chunky. No other thawing method I have tried has worked this well this consistently.