Believe it or not, I chop a couple tablespoons of onion real fine. Saute them in the sausage fat pretty dark, not burned. Then add the sausage back in the cast iron skillet and sprinkle with flour and mix in till it becomes pretty sticky. Then add milk of your choice. In our family we use unsweetened soy as my son is deathly allergic to dairy products(not lactose intolerant, deathly allergic). I just slowly add milk and stir it in. It will be thin til it absorbs some of the flour and fat mixture to thicken. Then I add more milk to get it to the consistency I'm looking for. I know that most have a 50-50 flour to fat ratio...........I just guess. Salt and pepper to taste