Well, if we're sharing recipes . . . here's mine for the same drink. I like to modify things for simplicity and consistency.
"IN THE SPIRITS" diabetic friendly "Old Fashioned".
Leaving aside the advisability of a diabetic drinking spirits, I thought this up in order to substitute out the sugar.
3 oz your whisky/bourbon of choice.
3 oz distilled water.
3 dashes Dillon's Lime Bitters.
1 capful RealLemon.
1 packet of Splenda
Ice to chill.
Pour a packet of Splenda into a cocktail glass, followed by 3 dashes of bitters. Add a capful of RealLemon, three shots of (in my case) Four Roses Small Batch Bourbon, and three shots of distilled water. Stir until blended thoroughly, and add ice. Enjoy