Damn. I would never ever recommend lillet as an alternative to vermouth. The aromatics element are not the same at all. There is a good reason vespers and martinis are two very different cocktails. 
Thanks for the feedback for Flor de Cana. Like I said, Iām a bit weary on rum. For blackstrap, Iām pretty fortunate to have snagged a bottle of Cruzan. Iām still bewildered they donāt carry Goslingās. I meanā¦ isnāt it the standard for blackstrap? Right now the only option we have is a spiced blackstrap rum (Kraken)? Sure, lets carry 50 variations of overpriced aged golden rhum but lets completely ignore a specific category of rum.
I wasnāt impressed by Bulleit. I donāt remember seeing 4 roses here, which is a shame.
BTW, I did a Coronado Luau Special with blackstrap and preferred it to the original. You might want to try that if you are lucky enough to get your hands on a bottle.
Hereās a lillet cocktail you might find pleasant?
I once had a large quantity of falernum and looked for recipes to try. Hereās what I found that looked interesting:
My favorite was the tradewind variant. I didnāt like the corn and oil much.
