Even when we buy orange juice that lists only “orange juice” as its ingredients, store bought OJ looks and tastes really different from OJ when I run a couple of oranges through the juicer. Store bought is more opaque and tends to just taste different from biting into an orange. Why?
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The answer is pasteurization… To sell orange juice you have to pasteurize it, which involves boiling. Boiling changes the flavour. If you can find cold pasteurized juice you’ll instantly notice the difference. This technique involves putting the juice in a vacuum chamber and lowering the pressure till it boils and freezes around room temperature, removing any living organisms but preserving the flavour.
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