'Lentil Stew' in the Bible

Jacob had cooked [reddish-brown lentil] stew [one day], when Esau came from the field and was famished;

and Esau said to Jacob, “Please, let me have a quick swallow of that red stuff there, because I am exhausted and famished.” For that reason Esau was [also] called Edom (Red).

Then Jacob gave Esau bread, and thick lentil stew, and he ate and drank. Then he got up and went away. So Esau despised his birthright.