The same recipe as an Espresso Martini (Diffords), but with grappa in place of vodka. A medium dark brown, very cloudy and barely translucent, with a tight, fine tan head that is surprisingly persisitent. Absolutely delicious espresso flavor, moderately sweet. I'll take this over a vodka base espresso martini! I used a ristretto shot to get the 30 ml.
With an Espresso Martini, the almost impossible decision is to go with Cognac or Grappa. This one benefits from a looong shake to get a lovely foamy head.
Would you go for a ristretto concentrated espresso shot or a weaker lungo espresso? Will the grappa still come through with a concentrated espresso shot?