1 cup of milk (250mL) = 1 serve of milk (1) (1) Eating 3 serves of milk a day as part of a healthy, balanced diet will provide most people with their daily calcium needs. Woolworths Instant Skimmed Milk Powder is made with Australian pasteurised milk, spray-dried to retain the delicious taste of cow's milk and packaged in a convenient, ready-to-use sachet.