Last night I made a Moscow Mule according to the recipe I posted recently. Actually, I made three of them at once, which is a convenient way to experiment.
Squeezing two large limes gave me about 4oz of lime juice, so I combined that with 4oz of vodka and a 12oz can of Vernors. Perfect. A dash of Angostura in the first glass was welcome, so I put it in the others too. However, it was very tart. Maybe Vernors is less sweet than other ginger ales. I added a bit under half an ounce of simple syrup to each glass and liked the result.
My guests were pleased - or at least they drank them without complaining!