6 to 8 pink peppercorns
2 1/4 ounces Pira Pora cachaca
2 ounces fresh squeezed ruby red grapefruit juice
1 ounce fresh squeezed tangerine or clementine juice
3/4 ounce lemon juice
3/4 ounce egg white
3/4 ounce ginger syrup (made with equal parts water and sugar, steeped with pureed ginger)
2 big dashes of Grapefruit bitters

1/2-inch-wide grapefruit twist

Instructions: Put peppercorns in a mixing glass and smash with muddler. Add rest of ingredients together with ice, shake very hard for 15-20 seconds. Strain into a collins glass. Garnish with grapefruit twist.

via Spirits: Couple take small-batch bitters in new directions – SFGate.