"Most charred" is a term used to describe food that has been burnt to a certain degree. If you're looking for synonyms for this phrase, you could use "overcooked", "burnt", "scorched", "carbonized", or "blackened". These words suggest that the food has been subjected to high temperatures for too long, resulting in a less than desirable taste and texture. Other possible synonyms include "crispy", "toasted", or "grilled", though these terms typically connote a more appetizing outcome. When cooking, it's important to strike a balance between cooking food thoroughly and not overdoing it to the point of becoming the "most charred".