Treasury of Scripture Knowledge
And Reuben went in the days of wheat harvest, and found mandrakes in the field, and brought them unto his mother Leah. Then Rachel said to Leah, Give me, I pray thee, of thy son's mandrakes.
So Esau said unto Jacob. Do let me devour some of the red - this red, for, famished, I am. For this cause, was his name called Edom.