Preparing cheese bits as a tiny dog reward: freeze, dry, fresh?

You can dice the cheese to the size you want, then spread it out on a plate or cookie sheet, and pop it in the fridge uncovered overnight. Bag and keep in the fridge, only taking out a handful or so as you need it. If you want to take your training on the road, use a cooler.

I'm lazy and just use the individually wrapped sticks or portions, and just bite or break off bits as needed.