Nothing soothes the soul on a cold, damp day like a warming Irish Coffee. The trick to this layered drink is whipping the cream so that it floats lightly on top for a beautiful presentation. To drink it properly, never mix the cream in. Instead, take a good slurp to capture the various textures and temperatures of cold, light whipped cream and hot, silky coffee with whiskey.
Fill the glass with hot water to heat it up.
Whisk the heavy cream until it is quite thick, but still has a little flow—before it stiffens into peaks. Put the cream in the fridge to stay cold.
Drop the sugar cubes into the glass. Measure 1 ½ oz Tullamore Dew and pour it on top. Mix the cubes a bit, but don't worry if they don't completely dissolve. Add about 3 oz hot coffee, and mix until the sugar completely dissolves.
Very gently and slowly, ease the whipped cream on top of the cocktail, where it will float on top.