Drink mixers are the non-alcoholic ingredients in mixed drinks and cocktails. There are many reasons mixers are used. They change or enhance flavors or add new ones to a drink. Mixers dilute the drink, lowering the alcohol by volume in the drink. They may make the drink sweeter, more sour, or more savory. Some mixers change the texture or consistency of the drink, making it thicker or more watery. Drink mixers may also be used strictly for decorative purposes by changing the color or appearance of the drink.They also simply increase the volume of a drink, to make it last longer.