Once the rhubarb syrup is made, it takes only a few minutes to make a couple of drinks. This recipe makes enough syrup for about 14 drinks. Store syrup in refrigerator until ready to use.
You can make 2 drinks at a time in an average-size cocktail shaker. Look for a large shaker, if you would like to make 4 drinks at a time.
If you have room in your freezer to place empty martini glasses, freezing them for at least 1 hour helps keep your drink icy cold.
Glasses can be dipped in sugar at least 4 hours in advance.