Fair warning – this drink takes more than the average amount of prep work – plan ahead. It uses homemade rhubarb syrup and homemade sour mix, both of which need to be made well in advance. But it IS very good, and worth the trouble. The secret is to make a LOT of the rhubarb syrup and sour mix at a time – it freezes well, and keeps in the refrigerator for quite a while.
Dump all of the above into a shaker, shake like hell, and pour. Makes enough for two large martinis.
Notes: If you are like me, and don’t like really sweet drinks, use the juice from a large lime (or 1.5 medium limes), and/or add in a splash of club soda to the martini glass. It really helps cut down on the sweetness.