Prepare AeroPress for brewing in the upright position. Ideally use the flow control cap, if available (see note).
Grind coffee to espresso fineness and add to AeroPress.
Add 100g of near-boiling water to AeroPress and stir back & forth aggressively. Set aside to brew for ~2 minutes.
After ~2 minutes, slowly push down on the AeroPress over 30-45 seconds.
Make the simple syrup my mixing brown sugar, vanilla and hot water together. Stir to combine.
In a cocktail shaker, add ice, AeroPress espresso, simple syrup, heavy cream, and Seedlip Spice 45. Shake vigorously.
Double strain into a martini glass.
Garnish with three coffee beans.