My daily food cost is about $20. I eat a pretty large amount since I do a lot of athletics and I need to keep the body going strong. Some weeks groceries might be $200 if I load up a lot of stuff on sale (ie buying 12 lbs of beef at once), and other weeks it might be $50 for little things here and there, but overall it averages to around $20 a day. My diet is also heavy on fresh produce and meat, both of which can be pricey, but I think I do a pretty good job of being thrifty despite the fact that DC is so expensive for food. When I go home to rural Pennsylvania, everything is about 25% cheaper.... meat, eggs, vegetables, nuts, dairy, beans, everything. Even buying things "on sale" in DC is still more expensive than regular price at the local supermarket in PA. It's frustrating.