Dr. Marty
Questions & Answers

I would use a blender. Grind into a Mashed Potato paste.

Besides heading warm water to it and letting it sit for a couple minutes you can also take a spoon and using the backside of it mush it down into a paste that can be eaten even if the puppy doesn't have teeth

You can add warm water and let it sit for two or three minutes and it softeneds up

The start up guide that comes with your purchase has instructions for adding warm.