Soak dry food in 1/2 cup water and soften it completely.
When dry food is soft, mash with a fork and mix all ingredients in a 2 quart jar and shake thouroughly. Sometimes I microwave it to the temperature of baby formula.
Serve about 4 fluid ounces at a time twice daily for maintenance.
If your little guys are eating too much and you feel they are getting fat, you can increase the amount of water. I have tried increasing the amount of dry food, but if it gets too thick some of them won't eat it.
This formula also freezes well as the Sustacal must be used within 48 hours if left only in the fridge.