I’ve only eaten them out of hand, unadulterated. That’s how I eat almost everything. It’s like cherimoya: rip it open and have oral-sex-at-a-distance with the tree, but don’t eat the outside green part or the seeds. Sometimes they don’t ripen perfectly, so they can be a bit dry or bland, but a good lúcuma has a texture between canistel and mamey sapote and a flavour almost like caramel. (I’ve never actually eaten caramel, but I can imagine.)