How to remove a smokey/ charcoal taste from food?
I hate to be the bearer of bad news, but I don't think there is anything you can do to remove that flavor. It sounds like what is often described as "scorched" flavor. In restaurants, that is well known as the one flavor you can't mask, you just have to dump the whole batch and move on. You can feel free to take a shot at masking it with acid (lemon, vinegar, ...), salt, sugar, and spices, but I don't think it is going to work.