Sarsparilla, pop tarts, Back to the Future, Twin Peaks, sex magick, doors to hell and double glazing...

The Doc Brown

1 1/2 oz Bourbon or Rye Whiskey

1/4 oz Amaro Montenegro

1/4 oz Amaro Averna

3-4 oz Root Beer or Sarsparilla

Build in a glass or tin mug with pebble ice, garnish with a twist of lemon.