Mimicking the Dr. Pepper flavor, of course, depends on the IPA. I started with the above specs, using local Yards IPA, but went through a few ratio tweaks before settling on: 90 ml cola, 45 ml IPA, 30 ml amaretto. But even that isn't quite dead on... What IPA brands would you all recommend?
Ah! Yes, good suggestion, Christian. I'm well familiar with Harpoon IPA. I'm going to have to hunt that down. Used to be more available around me. Not so much in recent years. Thanks!