The Book of Household Management by Mrs. Beeton

545. MEAT, THEN, PLACED ON BURNING FUEL was found better than when raw:

it had more firmness, was eaten with less difficulty, and the ozmazome being condensed by the carbonization, gave it a pleasing perfume and flavour. Still, however, the meat cooked on the coal would become somewhat befouled, certain portions of the fuel adhering to it. This disadvantage was remedied by passing spits through it, and placing it at a suitable height above the burning fuel. Thus grilling was invented; and it is well known that, simple as is this mode of cookery, yet all meat cooked in this way is richly and pleasantly flavoured. In Homer's time, the, art of cookery had not advanced much beyond this; for we read in the "Iliad," how the great Achilles and his friend Patroclus regaled the three Grecian leaders on bread, wine, and broiled meat. It is noticeable, too, that Homer does not speak of boiled meat anywhere in his poems. Later, however, the Jews, coming out of their captivity in Egypt, had made much greater progress. They undoubtedly possessed kettles; and in one of these, Esau's mess of pottage, for which he sold his birthright, must have been prepared.