羊羹 (yōkan) is a traditional Japanese dessert made from red bean paste, agar-agar, and sugar. It has a firm, jelly-like texture and is often enjoyed in small, rectangular slices. The main ingredient, azuki beans, is cooked and sweetened to create a rich flavor, while agar-agar, derived from seaweed, serves as a gelling agent. This sweet treat is commonly served with tea and can be found in various flavors, including matcha and chestnut. It is popular during festivals and special occasions in Japan, showcasing the country's appreciation for seasonal ingredients and artistic presentation in food.