Easiest way to make stews?

Kill the 1st form frogs/cats with multiple hitting classes (Bandit and Dual Blades are the fastest.. unless Night Lords out-hit them?), kill the 2nd body with your strongest characters, to get the Spittles or Eggs.

After getting the items, you have to create the Witch foods one by one until you have the ones needed to create stews.

Alternately, you can buy the spittles and eggs from the free market.