Bushmill's Irish coffee recipe

1 1/2 fl Bushmills Irish whiskey
1 ts Brown sugar (optional)
1 ds Creme de menthe, green
1 x Strong fresh coffee
1 x Whipped cream
Pour whiskey into Irish coffee cup and fill to 1/2 inch from top with coffee. Add sugar if wanted and mix. Top with whipped cream and drizzle creme de menthe on top. OPTIONAL - May rim cup with sugar.