The use of proper freezing containers and packaging methods controls or prevents freezer burn. Glass, metal, and rigid plastic containers that are made especially for freezing are excellent packaging selections because they effectively control evaporation. All containers used for freezing should be leakproof and easy to seal. Packaging materials must be durable and must not become brittle enough to crack at low temperatures. Preparing Vegetables for Freezing Fresh, tender vegetables right from the garden are best for freezing.
Washing is the first step in preparing vegetables for freezing.
Wash vegetables thoroughly in several changes of cold water. Lift them completely out of the water with each change of water so grit can settle to the bottom of the pan and be discarded following each washing. Peel, trim, and prepare the vegetables according to the directions for each specific vegetable given in Table 1. Unless vegetables are to be cut into uniformly-sized pieces, they should be sorted according to size. When a vegetable is picked, the enzymes responsible for the changes during growth and ripening continue to be active.