Harold McGee, author of Keys to Good Cooking: A Guide to Making the Best of Foods and Recipes, loves ice cream. Here he shares a quick and easy way to make it using freezer bags—no ice cream maker required! (And here’s Harold’s Ice Cream in a Bag recipe in case you want to try this at home.)

CHOW Tips are the shared wisdom of our community. If you’ve figured out some piece of food, drink, or cooking wisdom that you’d like to share on video (and you can be in San Francisco), email Blake Smith and tell us what you’ve got in mind.

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