In Tansan, produced by the confectionery company Morinaga, is a sparkling canned drink that resembles a typical soft beverage you’d find on supermarket shelves.
Available in two flavors, “Dry Grapefruit” and “Lemon,” it creates a chemical reaction once in the stomach, causing the liquid to expand and form a semi-solid gel.
This gel remains in the digestive system for two to three hours, potentially helping to create a feeling of fullness, suppress appetite, and reduce the desire to snack.