Yes I did not have all the original ingredients but going through Sasha Petraske’s About Cocktails (yes, I accidentally got the German version….) I thought that I could try a variant of the Si-Güey:

Build 3 dashed Angostura Orange, 7.5 ml Grand Marnier, 60 ml Topanito Blanco, in an old fashioned with a (I know - crappy - milky) ice cube and stir. Finish off with 7.5ml Islay. And yes, overkill, I did a bit of a sacrilege and used Laphroaig.

Scotland, forgive me!