Complex sentence: In 1896, Waldorf Salad appeared in "The Cook Book" by "Oscar of the Waldorf"; the original recipe did not contain nuts, but they had been added by the time the recipe appeared in "The Rector Cook Book" in 1928.
Split into simpler sentences: In 1896, Waldorf Salad appeared in "The Cook Book" by "Oscar of the Waldorf". The original recipe did not contain nuts, but they had been added by the time the recipe appeared in "The Rector Cook Book" in 1928.