Cointreau: Cointreau is an orange-flavoured triple sec liqueur produced in Saint-Barthélemy-d'Anjou, France. It is consumed as an apéritif and digestif, and is a component of several well-known cocktails. It was originally called Curaçao Blanco Triple Sec. Despite the orange bottle, Cointreau is colourless.
Simple syrup: Simple syrup (aka sugar syrup, or bar syrup) is a basic sugar-and-water syrup used by bartenders as a sweetener to make cocktails. Simple syrup is made by stirring granulated sugar into hot water in a saucepan until the sugar is dissolved and then cooling the solution. The ratio of sugar to water is 1:1 by volume for normal simple syrup, but can get up to 2:1 for rich simple syrup. For pure sucrose the saturation limit is about 5:1 (500 grams (18 oz) sucrose to 100 millilitres (3.5 imp fl oz; 3.4 US fl oz) water).