Creating a knockout recipe takes a lot of trial and error. But once you nail it, everyone wants a taste—which is why Holger Breuer at HB-Custom keeps cooking up juicy Honda Dominator customs like this one. Holger's first go at the revered Honda NX650 Dominator was a stripped-down scrambler that was commissioned by a client. Next, he took his favorite ideas from the first build, refined them, and built a second Dominator as a showpiece. It was a hit, and he's now getting more requests for…