For 2 drinks you need:

approx. 40 ml oat cream 
60 ml freshly brewed espresso 
20–30 ml light maple syrup (Grade A) 
100 ml Gary + Grisha vodka 
2 tumblers or water glasses

Shake vodka, freshly brewed espresso and maple syrup vigorously with ice in a cocktail shaker. Strain over fresh ice cubes into both chilled glasses. Gently float the oat cream on top.