"by Jewell Dziendziel Sep 1, 2017 Cafe, Casual, Detroit, Diners, On The Go, Uncategorized 0 comments. Located on the outskirts of Corktown (depending on which direction you are coming from) on Michigan Ave is Detroit’s Best Kept Secret, Hygrade Deli. Hygrade Deli has been in business for over 65 years, managing to keep the same family running it for the past 45 years. The staff treats you like family and the food is on pointCorned Beef is one of my favorite sandwiches. Slather on Thousand Island and top with kraut and its the best! When I heard that Hygrade Deli was the place to score one of their famous Reubens, I couldn’t wait to get in there and try one. That’s not all they have. With a menu including sandwiches, soups, entrees, and breakfast, Hygrade Deli is your one stop shop for everything delicious."