Agar Shots

850g juice
200g vodka
juice from two limes (not much)
6g agar (around .6%)

boiled part of the juice with zest of 2 limes, dispersed agar (not all of it dissolved, since I have the flake kind - I think the powder would work better). Strained and combined with the vodka and the remaining juice. Only partially gelled; was edible, but will use slightly more agar next time.

Molecular Mixology Source

http://spiritsandcocktails.wordpress.com/category/molecular-mixology/

Great stuff, especially the videos on the Aviation, Vessel 75, and Rosewater Rickey