Do you have access to sugar cane?
They make rum a little south of here, mostly in Belize but also in southern Quintana Roo. I know they grind the cane for the syrup, which is more or less molasses. They ferment that and age it in barrels that I think whiskey was aged in. I'll do some more research. I remember reading once that they buy the old barrels from either whiskey or brandy and use them for the aged, dark rum. For white rum, they distill it like other white booze. We can get some great rums down here, even the Cuban ones
My favorite is from Nicaragua, called Flor de Cana. I've seen it in the US. It comes aged for 5 years, 7 years, or 12 years. The 12yo is really nice
Expensive though, even here. It's very smooth and like a good, aged brandy. What is said is that after the Cuban revolution, the rich rum and cigar making families moved their operations out of Cuba. The best cigars are now said to be made in the Dominican Republic by Cubans and the best rum is made in Nicaragua, also by a Cuban family.
My other favorite is called One Barril and is from Belize. It's not considered fine rum by the ones who know because it is not aged as long and it is made from darker molasses, maybe a second squeezing or something. It's a lot rougher taste. Anyway, what I like about it is that it has a strong molasses flavor and it reminds me of graham crackers