Which brand alcohol is nicest to work with for painting on royal icing using dusts?
I usually use a clear alcohol-based extract with a flavor that marries with the cookie - like lemon, for instance. Then you're left with a touch more flavor too! But cheaper vodka also works well. Some people use Everclear, but I imagine it would dry faster than vodka or extract (due to higher alcohol content), and I like the drying properties of these two things just fine. I also don't like the idea of painting 190-proof alcohol on a cookie . . .
I usually use 151 Rum, because yes it dries fast, but I also only paint on outlining, etc. so I like it to dry fast.