Made this with Bacardi Ocho and M&R Rosso, with and without Angostura. Without Angostura it's a discordant disappointment. With angostura, it's a harmonious whole.
I skipped trying it with a dark rum even though I have Goslings Black Seal on hand - I just don't expect it to work well. I might try it some other day.
Ran out of M&R Rosso and got a bottle of Dolin Rouge. Decided it was a good time to do a side-by-side of gold vs black.
40 bacardi ocho + 20 dolin rouge + 1 dash angostura - still damn tasty.
40 gosling black seal + 20 dolin rouge + 1 dash angostura - I don't really feel like the molasses and spice fit in this drink. There might be something that could done about that, but as it stands I much prefer this drink with gold rum.
I skipped trying it with a dark rum even though I have Goslings Black Seal on hand - I just don't expect it to work well. I might try it some other day.