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What kind of packaging materials should be used for freezing?
Packaging materials must be moisture-vapor resistant; durable and leakproof; not become brittle and crack at low temperatures; resistant to oil, grease or water; protect foods from absorption of off-flavors or odors; easy to seal; and easy to mark. Good freezing materials include rigid containers made of aluminum, glass, plastic, tin or heavily waxed cardboard; bags and sheets of moisture-vapor resistant wraps; and laminated papers made specially for freezing. Source: Original FAQ posted at http://188.8.131.52/faq/FAQ_home.php