Recipe Serving Size Calculator — illustrative example INPUT Recipe serves 4 and uses 200 g rice, 400 ml water and 1 onion; target is 6 servings. RESULT Scale factor: 6 ÷ 4 = 1.5. Rice: 300 g. Water: 600 ml. Onion: 1.5. Check the cooking method and vessel rather than multiplying cooking time by 1.5. REVIEW Serving-size scaling multiplies ingredient quantities by a stated factor. Cooking time, pan size and seasoning may need separate adjustment, so do not scale those mechanically. This is a teaching example, not a live execution record.