When you cook pasta, the cooking process transfers the starch from the pasta to the water. Don't throw this out! This starchy water can in fact have many beneficial uses.What You Can Do With Left Over Pasta Water1. Water your plants: The pasta water contains plenty of minerals, and your plants would love it.2. Wash your hair: Treat yourself to a ten-minute scalp massage with pasta water before shampooing. It can help treat your dry or damaged hair.3. Soak your feet: Use it for a mineral-filled foot bath and your feet will be soft and silky.4. Soak vegetables: You can use it to soak various vegetables for added taste.5. Make pizza dough: Use the leftover pasta water to make a pizza crust - it's already salted!6. Add to sauces: Add the pasta water to your sauces. It helps thicken your sauces and provides extra taste.7. Make soup: Pasta water is great for making stocks or soups. It will help thicken your soup base and add extra flavour.8. Steam your vegetables: Save yourself the time and hassle of boiling new water and use your existing pasta water to steam your vegetables. 9. Wash your dishes: Use it while you're washing dishes. The starch from the pasta will act as a detergent and will make it easier to remove food stains.