Pineapple juice is a beverage made from the fruit of the pineapple plant. It contains water, sugars (such as fructose and glucose), vitamins (including Vitamin C) and minerals (like potassium). Pineapples are native to South America but now widely grown in tropical regions around the world. The juice is often consumed fresh or canned, and it's also used as an ingredient in many recipes for desserts, cocktails, and sauces.