You can take split-base old fashioneds in a ton of different directions. We found an intriguing combination here with the sweetness of bonded corn whiskey and citrusy mezcal. 

Ingredients:

• ¼ oz
• 1 ½ oz corn whiskey (Mellow Corn suggested)
  
• ½ oz mezcal (Del Maguey Santo Domingo suggested)
• 2 dashes Bittercube Corazon bitters

Instructions:

• Add all ingredients to a mixing glass with ice
  
• Stir for 20 seconds and strain into a chilled rocks glass
• Garnish with an orange twist

Photo:

 Scott Kallstrand