"A recipe for Holy Mackerel Cat Treats made with mackerel, whole grain bread crumbs, vegetable oil or bacon grease, egg, brewer's..."
INGREDIENTS
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1/2 cup canned mackerel, drained, crumbled
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1 cup whole grain bread crumbs
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1 tablespoon vegetable oil or bacon grease
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1 egg, beaten
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1/2 teaspoon brewer's yeast, optional, see Note