Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make a millionaire martini [title] Chill a cocktail shaker and 2 coupe glasses for at least 15 minutes. [step] Put a cocktail shaker and 2 coupe glasses into the freezer to chill completely. Freeze them for at least 15 minutes or leave them to chill for several hours.

Ending1: [title] Add 2 teaspoons of the whiskey and 2 of a bourbon on the rim of the shaker for extra flavor. [step] Turn the cocktail shaker's lid counterclockwise to slowly add the whiskey. Ending2: You should wake up the martinis ready to go. [title] Pour a cocktail shaker with 2 g of vodka in it into a martini shaker. Ending3: Chilling will also prevent the martinis from freezing to a nub and stubs. [title] Use blender and water to dilute the club soda. Ending4: [substeps] If you don't have coupe glasses, you could use martini glasses. [title] Measure the liquid ingredients into a cocktail shaker.

Answer format: ending1/ending2/ending3/ending4