Before we start, it's important to note that many of the components will cool down the drink if added in their natural state. As a result, we will take steps to mitigate this by warming up the glass, cream and whiskey separately
Using your preferred method, brew a batch of strong coffee, it should be black as night
While brewing the coffee, lightly whip 35g of cold cream (warm cream will not whip, no matter how hard you try). It should thicken ever so slightly, but still maintain a pourable consistency. Then, transfer it to the small jug
Meanwhile, pour 35g of Irish Whiskey (I use Jameson) into the whiskey glass
Approximately 1 minute before the coffee has finished brewing, fill the Irish Coffee mug, and 2 bowls halfway, with boiling water. Then, warm the jug of cream and glass of whiskey by placing them into one each of the bowls
Once the coffee has finished brewing, empty the water from the mug. Then add 15g of Soft Brown Sugar along with 145g of Coffee, and stir
Pour in the 35g of Whiskey, and stir again
At this point, I recommend moving the glass to its prime serving location in order to avoid spillage. Take the small jug of lightly whipped and warmed cream, and starting from the side, gently pour on top of the whiskey enhanced coffee
There you go, Irish Coffee, now, sip nonchalantly while quietly contemplating the folly of mankind