2 parts Irish Whiskey (Naldi HQ recommends Tullamore Dew)
1 part Sweet Vermouth (Naldi HQ recommends Noilly Prat)
1 lemon slice
Shake the whiskey and vermouth until mixed; pour into the cocktail glass.
Squeeze the juice from the lemon slice into the drink, for a touch of tartness.
Garnish with one ripe, luscious maraschino cherry.