What is the relationship between brewing and beer in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Founder Christian Ettinger was a business student at the University of Oregon when he first began brewing beer in the early 1990s and remembers when craft or specialty beer consisted of the Killian’s Irish Red, Coors Winterfest and Henry Weinhard’s Dark, Red or Ale.

Answer: product_or_material_produced