Funny I'm coming across this thread now - my August food bill is much lower than usual (relative to my non-mustachian day, I'm a recent convert)
Cleaned out my freezer, and the garden has been giving me a steady supply of beans, cucumbers, zucchini, broccoli and tomatoes.
(September I'm looking forward to the butternut squash, quinoa, sweet potatoes, carrots, peppers from the garden)
My total food bill will be $165 for August, but that's including a $50 gift card I had to use up by end of this month, and I just bought non-perishables on sale that will last me long time) So it's closer to $115, and I'll be living off of the leftovers I have until Sept, so that's my final tally.
(My average pre-mustachism was ~$600/month on food...)