This classic from the prohibition era was created in memory of the dubious medical experiments conducted by Serge Voronoff in the 1920s, in which he grafted monkey testicle tissue to human testicles in an attempt to enhance human virility.
1 1/2 oz gin
1 1/2 oz orange juice
1 tsp absinthe
1 tsp grenadine
1/2 tsp rich (2:1) simple syrup
Shake and strain into a chilled glass. Orange peel garnish.