We are looking for a foodservice / restaurant supply store in the North Chicagoland area (we live in Waukegan, but would be willing to travel). When I lived in Seattle, I used to go to Cash and Carry (http://www.yelp.com/biz/cash-and-carr...) all the time for big bags of flour, inexpensive parchment paper, plastic deli containers, huge bags of tortilla chips, #10 cans of tomato sauce, 20 lb. bags of onions, cryovac meat packages etc.
I know of restaurant equipment stores that sell stuff like hoods, ranges, knives, and tools, but I'm looking for ingredients. Anything like that out here, or do I just need to suck it up and get a Costco membership?