Before doing anything you should carefully wash your hands and the entire work area that you will be using to prepare this cocktail. You will also want to wash your hands and all of the utensils, glasses and other items that you will be using to put together this recipe. You should make it a habit to always keep everything clean in your kitchen before preparing food or beverages.
Take a metal cocktail shaker and fill it half with cracked ice or crushed ice. You can use a plastic cocktail shaker as well. It is entirely up to you how much ice you will want to use. Remember that the more ice used will make your cocktail quite thin.
Add 1 ounce of rye whiskey, 1 ounce of absinthe, 1 ounce of sweet vermouth, 1 dash of aromatic bitters in your cocktail shaker. This is the best time to decide if you want to add or reduce a particular ingredient according to your personal preference.
Now, cover the lid of the cocktail shaker properly and shake it for few seconds until all of the ingredients mix well. You will want a nice smooth texture to your mixture so be sure to constantly check the consistency while shaking.
Your Brain Duster Cocktail is ready, gradually strain it into a martini glass, garnish it with a fresh maraschino cherry and enjoy. Be careful while straining your cocktail mix in to the martini glass as you do not want to spill it. It is up to you as to what type of garnish you would like to use.