You really do not need any milk. I found that as long as you keep mixing the butter and the rest of the stuff together you get the perfect frosting. If you really want it a little more liquidy then add some milk but make sure its warm and you only need very little. Otherwise it tastes great!

I didn't use any milk either, it was the best chocolate frosting ever! Everyone loved it!

Amazing! I couldn't believe how good this was. I used a few drops of almond milk instead of regular. I will use this again and again!