James bond cocktail

Only the charming 007 could have designed a cocktail as deliciously decadent as this one. Of course, the champagne has to be Dom Perignon and, look, don't be clumsy and don't move or shake this cocktail.

One sugar cube per cup;
Angostura Bitters;
A piece of vodka;
Chilled champagne;
Crushed ice;
A spiral of lemon peel:

Soak the sugar cube in Angostura Bitters and carefully place it in the bottom of a chilled champagne flute.
Add a spoonful of crushed ice and vodka and fill the glass with champagne.
Decorate with the spiral of lemon peel.