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Milk powder is milk that has been dehydrated to remove most of its water content, creating a dry product that can be stored longer and transported more easily than liquid milk. It matters because it provides a shelf-stable alternative to fresh milk and can be reconstituted with water for drinking or cooking.
AI-generated from the Wikipedia summary — may contain errors.
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Powdered milk Powdered milk, also called milk powder, dried milk, dry milk, or (in food ingredient labeling) milk solids, is a manufactured dairy product made by evaporating milk to a state of dryness. One purpose of drying milk is to preserve it; milk powder has a far longer shelf life than liquid milk and does not need to be refrigerated, due to its low moisture content. Another purpose is to reduce its bulk for the economy of transportation. Powdered milk and dairy products include such items as dry whole milk, nonfat (skimmed) dry milk, dry buttermilk, dry whey products and dry dairy blends. Many exported dairy products conform to standards laid out in Codex Alimentarius.
Powdered milk is used for food as an additive, for health (nutrition), and also in biotechnology (saturating).