Spirit and liquor jiggers have become a cocktail mark of excellence. Whilst some bartenders can accurately free pour, it is often safer to use a jigger for correct ratios, such as two to one or three to one. One side of the jigger measures 15ml or a "single shot" while the other side measures 30ml otherwise referred to as a "double shot". The stainless steel used is completely dishwasher safe.