Combine all ingredients, except Peychaud's bitters and soda water, in a cocktail shaker and shake well. Add ice and shake again. Strain into a martini glass. Set aside one half of the cocktail shaker, without ice, to save the film left from the cream and egg. In the shaker, add 2 dashes of Peychaud's Bitters and combining it with the left over film and add enough soda to create a foam. Top the drink with this foam until a head appears. Garnish with lemon zest.
If you choose to drink alcohol, Maine Spirits asks that you drink responsibly.
If you think you have a drinking problem, you should seek professional help.
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