One idle idea of mine has been a bike tour of food factories — a throwback to those kindergarten tours, but this time much cooler because adults ask better questions. We all know that Vienna Beef doesn’t do factory tours (I wonder why), but Eli’s Cheesecake certainly does. In particular, four great specialty food manufacturers operate on the near west side: Goose Island Brewery, Intelligentsia Coffee, Red Hen Bread, and Vosges Haut-Chocolat. Intelligentsia does public tours, but the rest?