Shake, pour un-unstrained into a double rocks glass.
'Lion' is an old-fashioned term for a sour sweetened by both a liqueur and a syrup or nectar. A Snoop Lion is simply the dankest Lion. The passion fruit syrup and maraschino liqueur draw out the rum's overripe tropical fruit esters and smokey musk, respectively. Originally made with cocktail grapefruit, a different species of citrus from regular grapefruit, comparatively mellow, sweet, and fragrant. Using white grapefruit juice adds bitterness and structure.
New York City, December 2012.