Likened to a Vodka & Red Bull for the discerning, the caffeine-loaded Espresso Martini consists of generous shots of vodka and espresso with coffee liqueur...
The hot coffee worked for me but I could not get the foam top. I note that the video has sugar syrup in the ingredients - is this the ingredient that makes the difference?
The foam comes from the coffee's crema so should not be related to use or not of sugar syrup. A good hard shake and good quality ice (not watery) is also key.