The classic grape sodas are NEHIS, which stands for National Exotic Hawaiian Island Soda. This soda was created in the late 1950s and is still popular today. It is a carbonated beverage made with natural fruit juices and flavors, including grape. The flavor of NEHIS has been described as sweet and tart, with a hint of citrus. It is a popular choice for those looking for a refreshing and unique soda experience.