For a less sweet take on this Yellow Negroni, try this instead:
• 30 ml Pisco 1615 Mosto Verde Italia
• 20 ml Suze (or Salers for more earthly bitterness)
• 20 ml Cocchi Americano Bianco
• 10 ml Yellow Chartreuse
• 5 ml Limoncello (only for citrus and colour)