It's all about unwinding at izakayas without getting too boozed up before heading home, this humble highball beverage is gaining fans in Singapore and the rest of Asia too. So what's a highball you ask? A highball is essentially an alcoholic beverage made with a base spirit, topped up with a non-alcoholic, carbonated mixer, served in a tall glass with lots of ice. It’s usually a blended whisky mixed with soda with possibly a simple garnish like a citrus peel. We love this simple but ingenious concoction of whisky and lime.