Maslow's Hierarchy of Needs. Definition. Maslow's hierarchy of needs is a theory of motivation and personality developed by the psychologist Abraham H. Maslow (1908â1970). Maslow's hierarchy explains human behavior in terms of basic requirements for survival and growth.
When you use ice to cool the ingredients for ice cream, the energy is absorbed from the ingredients and from the outside environment (like your hands, if you are holding the baggie of ice!).
As you eat more of your ice cream, consider transferring it to a smaller container. Smaller containers mean less ambient air, which means less risk of freezer burn. But regardless of how airtight your ice cream container is, prolonged time in the freezer will degrade homemade ice cream's flavor and texture.