Simplify the following text for a Grade 5 native English-speaking person.
Original: ( Esau referred to the dish as , `` that red , red stuff '' , giving rise to his nickname , ( ` Edom , meaning `` Red '' ) . )
Simplified: ( Esau called the dish , `` that red , red stuff '' , which is why he is called Edom , ( ` Edom , meaning `` Red '' ) . )