1 1⁄2 oz Rhum Agricole (I used Rhum JM Blanc)
1⁄2 oz Green tea syrup (1:1 using a strong 5 minute steep of green tea + equal part sugar)
1⁄2 oz Lime juice
1 twst Grapefruit peel (As garnish)

Shake with ice, strain into a cocktail coupe, and garnish with a grapefruit twist.


Lime, grassy, grape, rhum funk, bitter, and green tea tannins.


Created at Loyal Nine in November/December 2016. For a name, I twas inspired by Jules Verne's 20,000 Leagues Under the Sea and dubbed it after the resting place of Captain Nemo.

Cocktail summary
Picture of Dakkar Grotto
Posted by yarm on 10/17/2019
Created by
Frederic Yarm, Loyal Nine, Cambridge, MA
Is the
author's original creation
Not yet rated
4.5 stars
(3 ratings)
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  • Solid cocktail. Used japanese barley tea infused ss instead of green tea. — ★★★★
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