* You can use either cow or soy yogurt. If it's not sweet add another tablespoon of rice malt and 1 tablespoon of flour.
Once the mini croissants are cooled down, I suggest to keep them in an airtight container or in a plastic bag, so that they will retain all their fragrance and softness for at least 4-5 days (I don't know if they can keep well longer, because they never lasted more in my family) :D