Yeo's Lemon Barley Drink is a refreshing beverage produced by Yeo Hiap Seng (Yeo's), a well-known food and beverage company based in Singapore. This drink typically comes in a 380ml can and is made with barley extract and lemon flavoring, offering a sweet and tangy taste. It's a popular choice in many Asian countries, known for its thirst-quenching properties and pleasant flavor.