Tip - Blanching Vegetables is a Must Before Freezing (Home Food Preservation)

If you hope to pull tasty, nutritious vegetables from your freezer next winter, you need to blanch them first. Blanching stops the action of enzymes. These naturally occur in vegetables helping them grow and ripen. The enzymes continue to act after harvest and will cause color, flavor, texture, and nutrient losses. Freezing slows down the action of enzymes - but does not stop them.