In addition to spending 1/4 less on food than I did in January, I also challenge myself this month to:
Make meal plans and eat proper meals
My fridge is crazily full for someone who a) is the only human living in this apartment and b) so frequently can't find anything to eat. So, what I need to do is empty out all of the gross old spoiled moldy whatevers lurking in the fridge, make an inventory of what I actually have, and plan MEALS using INGREDIENTS.
Thus is my challenge for March. Also the groceries thing.