According to the angel Raphael, what is roasted fish heart good for?

Jesus ... rebuked the foul spirit, saying unto him, Thou dumb and deaf spirit, I charge thee, come out of him, and enter no more into him. Mark 9:25

The angel, answering, said to him: If thou put a little piece of its heart upon coals, the smoke thereof driveth away all kind of devils Genesis 6:8

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