To add to my previous comment- you can keep the ovenproof rum and use the usual ‘coconut rums’ (I.e. liqueurs) and it’s still good. As per comments so far - mix and match your rum combos to your heart’s content you’ll find something amazing that works for you
This drink is a refreshing change from those drinks that ask for sugar to keep things balanced and is easily tweaked to your own taste and also to what you may have in your bar.
Does nicely on the rocks as well.