No, we do not backslop. We tried the never ended bucket method at at first (take some add some to replace) and it got GROSS!

After that I chose to go to the polar opposite and start with a clean container each time. I was thinking about growing a mother culture like sourdough and adding a small amount to each batch, but that may get gross too. We get fairly good results with a 3 day ferment. Not sure if the 1/2 gallon containers will be different than the quart jars in results after 3 days. We will have to see. I could always go 4 days if needed by just adding another container to the cycle.
I do add pepper to it sometimes. I like to just mix the pepper right into the scratch mix. We also will sometimes just chop peppers and give them to the birds. I may start playing with turmeric too. I hear/read that it has a lot of health benefits for the birds (and us).