Whisky Singapore explain to you how are whisky being created. Whisky is created by going through a process called fermentation of grain or malt. Whisky can be created by various type of grains such as, barley, corn, rye, and wheat. Malt Whisky mainly produced using malted barley, while grain whisky mainly produced using all type of grains. Whisky are normally aged in wooden cask. Type of wooden cask are used to aged whisky are white oak, bourbon or wine cask. Whisky are strictly regulated with different types and classes.