Becherovka Tonic is a popular cocktail in Prague that features the Czech herbal liqueur, Becherovka, mixed with tonic water. Becherovka is made from a secret blend of herbs and spices, giving it a unique and complex flavor. When mixed with tonic water, it creates a refreshing and slightly bitter cocktail. This drink is often garnished with a slice of lemon or lime for added citrusy freshness.