simple syrup
A basic sugar-and-water syrup used to make drinks at bars is referred to by several names, including simple syrup, sugar syrup, simple sugar syrup, and bar syrup. Simple syrup is made by stirring granulated sugar into hot water in a sauce pan until the sugar is dissolved and then cooling the solution. Generally, a ratio of two parts sugar to one part water is used. This type of syrup is also commonly used at coffee shops, especially in the United States, to make flavored drinks.