Ingredients:
60 ml Bourbon or Rye
1 Sugar Cube
3-4 dashes Angostura Bitters
Orange twist (garnish)
Instructions:
Place the sugar cube in an old fashioned glass and cover with bitters. Add a splash of water.
Using a muddler (or spoon, lipstick, sharpie or whatever) stir together the ingredients until dissolved.
Add ice (or one big ass ice sphere) and pour in once ounce of whiskey at a time, stirring and incorporating the spirit. Garnish with an orange twist.