Mandrakes, dudaim in the original; probably a rare kind of fruit, supposed to possess prolific virtues.
Related Commentaries of Genesis 30:14
Genesis 30:14
14 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.