Complex sentence: Ken Kesey's brother Chuck, and Chuck's wife Sue started the Springfield Creamery in 1960, and the business survives today based partly on sales of their flagship product, Nancy's Yogurt, developed from recipes of Nancy Hamren.
Split into simpler sentences: Ken Kesey's brother Chuck, and Chuck's wife Sue, started the Springfield Creamery in 1960. The business survives today based partly on sales of their flagship product, Nancy's Yogurt, developed from recipes of Nancy Hamren.