What is the recommended starting ratio of old food to new food during the initial phase of a slow food transition?

Answer

80–90% old food and only 10–20% new food

A common recommendation involves starting with a mix of 80–90% old food and only 10–20% new food for the first meal.

What is the recommended starting ratio of old food to new food during the initial phase of a slow food transition?
healthDogsensitivityGerman Wirehaired PointerStomach