Expressions can also use variables. Variables have a Variant data type and the expression evaluator converts the data type of a variable from a Variant subtype to an Integration Services data type before it evaluates the expression. Variables can use only a subset of the Integration Services data types.
The total COST of each cocktail using 2oz whiskey per drink and using the higher estimate of $90 to buy all ingredients, the startup cost comes out to about $7.5/cocktail. After that first bottle of whiskey is gone, you will surely have PLENTY of the other ingredients left.
The most important question is: How many cocktails can I make with one bottle of liquor? The answer to this is, of course, going to vary from drink to drink and there are a few things to consider. The average cocktail uses: 1 1/2 ounces (the average shot) of a base liquor (i.e. vodka, gin, rum, etc.). Liqueurs are typically poured at 1/2 to 3/4 ounce.