OK. They cook the sandwich meats in advance and put them in little warming trays, to be assembled with buns and condiments when ordered. Since going to this method, I don't believe I've ever had a hot McD's burger, just lukewarm. Bleh.

On a different note, here's a very cheap, very filling, tasty, and modestly healthy meal from Wendy's that Mrs. Deubster & I occasionally enjoy:

1 Side salad
1 Sour cream & chives baked potato
1 Small chili

In our town, these are $1.19 each.