I've been thinking about asking this for some time now (I guess I forgot once I actually made it to a computer) but could you track and present to us a weeks worth (or whatever logical interval) of meals for you and the associated costs? I'd LOVE to get a look at an example of the amount spent and the proportions and types of food it gets. An example would be Ok but an actual week would be really cool.
I'm going to be moving into an apartment in July... super excited. Already mapped out where the local CFMs are 
I spend about $400 a month on food for myself - but I eat out for lunch about 4 times a week and I eat out an expensive dinner at least 1ce a month. And I drink beers at the pub from time to time with others. That is all included in the $400 a month.
My groceries tend to be under $200 a month. If I didn't eat out all the time, I estimate I would spend about $250-$300 a month on food, and I eat about 3-4kCal a day.
To put that into perspective, for $400/month, at 3-4 kCal a day, I am spending $13.00 a day for food in a 30 day month. That INCLUDES eating out.
An "actual week" is kind of tricky because I go out to eat from time to time, and I buy in bulk (2-3 weeks worth of meat at a time, on occassion). I keep track of my expenses on a weekly, monthly and yearly basis, and know that my food costs are ~$400 a month, which is about $100 a week, which is about $13 a day. I very rarely exceed 400 by a lot. I get all of my home cooked food from farmers, Whole Foods and the produce section of the grocery store. My restaurant meals include meat and vegetables and tubers. My lunches include Chipotle, Soup, Whole Foods Salad Bar, etc.