Look up the history and origin of making gravy and sauces ... modern gravies and sauces were started and developed in the Middle Ages for beef and meat dishes to mask the taste of rotten or semi rotten food.

Yes I know there are other sauces and gravies for vegetables ... but the little dish of gravy for your roast beef supper was started because someone just wanted their food to taste less like a rotting carcass because they had no refrigeration back then.