When measuring the ingredients for a cocktail the important thing is to get the proportions right. It doesn't matter what you use for measuring, provided you use the same item for each ingredient; for example, a liqueur glass or egg cup. For this reason I have used the term 'measure' wherever possible. The standard measure is called a 'jigger' and holds 45ml (1 1/2 fl oz or 3 tablespoons). It is well worth buying one of these if you make your own cocktails frequently.
The recipes in this blog are for single drinks unless otherwise stated. For two people, double the measure; for three people; triple the measure, and so on.