Onilikan

We heard about this place while on a cruise ship. They specialize in mango liqueur made from regionally grown mangoes. It’s not a particularly easy place to find unless you know it’s there. Many people we asked (locals) had no idea what we were talking about. It’s in the «Golden Zone», so you will need a taxi from the port.
The shop had a few other items besides the mango liqueur, some made from mango and some not. It was very pricey, however there are samples available it you want to see if it is worth it to you. It was worth it to my wife so she bought a bottle, plus a few smaller items.
Don’t worry about duties or customs. As long as you limit to 1 liter per person there is not a problem bringing it back to the States.
It’s a unique little shop and worth a visit if you have any interest in liqueur. I’d go 4-​stars except I do think they are too pricey, and they don’t haggle. Like in the US, the price is the price. But my wife says the liqueur is really nice.