Matthew Poole and continuators on 1 Samuel 2:15

15 Also before they burnt the fat , the priests servant came, and said to the man that sacrificed, Give flesh to roste for the priest: for he will not have sodden flesh of thee, but raw.

And the other parts to be burnt with it. See Levit. 3. 3, 4, 9. and 7. 31. So this was an additional injury; for lest the fork should mistake and injure them, they took such parts as they best liked whilest it was raw, when it might be better discerned.