Hi
I run most of the food through a food processor. Remy will not eat greenbeans if I don't
If you cook the potatoes and mash them into the raw food it should work. I don't add butter or anything and my guys still love them.
Peas would be a good food to try .. they are high in startches like potatoes.
Also, I cook dry beans.. like lentils and add to their food.. they love them