Complex sentence: Westby also is known for its cheese curds produced at the Westby Cooperative Creamery, which were, at one time, the official cheese curds of the Green Bay Packers NFL football team.
Split into simpler sentences: Westby also is known for its cheese curds produced at the Westby CO-OP Creamery. Westby's cheese was at one point the official cheesecurd of the Green Bay Packers NFL football team.