Meal service

When do they change the menus in Economy?
I have been to NYC/BOS nearly every month now since December and I'm getting a little tired of Beef Kobbler, Sausage and Mash and Vegetable Curry. I actually picked up some bagels in LHR on my last flight. Brilliant idea. Don't know why I didn't think of it sooner.
I have been to NYC/BOS nearly every month now since December and I'm getting a little tired of Beef Kobbler, Sausage and Mash and Vegetable Curry. I actually picked up some bagels in LHR on my last flight. Brilliant idea. Don't know why I didn't think of it sooner.