Cook shad roe fifteen minutes in boiling salted water to cover, with one-half tablespoon vinegar; drain, cover with cold water, and let stand five minutes. Remove from cold water, and place on buttered pan with three-fourths cup Tomato Sauce I or II. Bake twenty minutes in hot oven, basting every five minutes. Remove to a platter, and pour around three-fourths cup Tomato Sauce.