Questions keep on pouring into my digital inbox about all things ice cream, but surprisingly, rarely about the recipes themselves. 9 messages out of 10 are from ice cream-churning virgins, first dipping a toe into the great pool of frozen treats. It's the very machines that turn liquid into creamy confections that are the cause of most confusion, since there are so many models on the market these days and little guidance for the inexperienced shopper.