Adding mix-ins.
Can a half gallon of vanilla be thawed to a certain temperature (stirrable), mix-ins be stirred in, and refrozen? I can't find a chocolate chip I like. Closest is Baskin Robbins, but I like the flavor of Blue Bell Homemade Vanilla much better. Most chocolate chip varieties are too sparse or too chunky. I'd like to mix-in shaved chocolate. Yeah, I could do a bowl at a time, but would rather just scoop it out.