Well without starting a raging debate, how long to shake your cocktail for is a debatable topic. If you’re in Texas and it’s piping hot, so your ingredients aren’t that chilled, we would recommend about 15-30 seconds of shaking to thoroughly chill. If you’re shaking up cocktails on a London rooftop on an icy winter evening, you may only need 10 seconds for the stainless steel jug or tin to become frosty and cold to the touch. \r\rIf you’re mixing thicker elements like egg white or cream, you’ll need a longer and more vigorous shake. You are doing three things when mixing: introducing tiny air bubbles to create texture and mouthfeel, diluting your spirits with just the perfect amount of melted ice to avoid a watery drink and, finally, shaking with ice chills your drink to the ultimate temperature.