37 1/2 oz of Averna (or Amaro)
22 1/2 oz of Mezcal (or Tequila)
15 oz of grapefruit juice
15 oz of Lemon Juice
7 1/2 oz of agave syrup
45 oz of Ginger beer
7 1/2 oz of water
Add all the ingredients to a punch bowl and fill with ice. Garnish with grapefruit and lemon slices.