2 oz of Bourbon
1/2 oz of Averna (or Amaro)
1/2 oz of Orgeat (or almond syrup)
1/2 oz of Lemon Juice
1 dash of bitters
1 1/2 oz of Lager
1 twist of lemon peel
Shake all except lager with ice. Strain into Old Fashioned glass (no ice). Add lager and stir gently to incorporate. Express lemon peel, swipe rim & drop in.