RE: Where can I get some soft serve ice cream mixes?
Before I retired about 3 years ago, our store (no longer in existence) was able to (and did) special order 3 types of mix for customers from our local dairy (Prairie Farms). They had a high butterfat mix for regular ice cream, a low butterfat mix, and a soft-serve mix (which was basically an ice milk mix that they regularly sold to all the little mom-and-pop soft-serve stands in the area). These were all ready for freezing and we could get them in quart, half-gallon and, if I remember right, a 5 gallon size. You might have some difficulty getting these mixes during the winter when the soft-serve stands are closed, but you should have no difficulty finding them during the summer. You might have to give your LOCAL grocer up to a week to get a special order from their fluid-milk provider, but they probably could get it. I emphasize local (home-owned) stores, since many large chain stores get their fluid-milk products only through their chain warehouse, and most chain warehouses will not allow special-ordering of anything.