Boil corned beef for 2 1/2 hours.
Let cool. Slice and place in a roaster.
Mix jams and mustard in a bowl.
Brush mixture in between slices and on top of corned beef.
Pour 1/4 cup water around edges of the inside of the roaster.
Cover and cook for 1/2 hour or more until tender.
Uncover and cook until golden.
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