Amateurish ...
... lesson learned - make sure to evenly scatter the charcoal before lighting, as it had shifted significantly during transit to the island of Grinda, resulting in some charred food due to uneven heat. Grilled mushrooms, peppers, tomato, and potatoes, to go along with pre-made chimichurri-flavoured ground beef on a skewer - doesn't look like much, but the food was very tasty, with the grilled flavour that only charcoal could bring, in this case more of a wood-chip type of charcoal, and not the briquettes more commonly found in North America. But taste aside, the experience was priceless, and one more item crossed off the bucket list.