Blanching - what is the most effective method?

A hand holding a saucepan full of Brussels sprouts under water flowing from a kitchen tap

Source: © Getty Images

Explore enzymes and catalysts in this experiment into fresh food preservation. Includes kit list and safety instructions.

Fresh vegetables contain enzymes which, in time, help breakdown plant tissue, flavouring. Freezing vegetables slows down the process, but does not stop it.

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