I want to knit a a Debbie Bliss pattern that uses Cashmerino Super Chunky which is no longer in production. Can any suggest an equivalent?
Try Ravelry. Click on the "Yarn" tab and type in brand name of yarn in the search box and it should come up with projects that have been knitted or patterns that call for that specific yarn.
You could also search individual suppliers (like Lion, Yarnmarket or Webs) for bulky cashmere blends or just bulky yarn to find an equivalent.