Can you live off of 100 a month for food?

If so, how? My mom made a bet with me and told me I couldn't survive off of 100 month for food, I believe she is wrong! She is what I like to call a food snob, lol, someone who buys the best brands and expensive brands of food. Anyway if this is possible, can some one please teach me the ways lol. By the way if I win I get reimbursed for the 100 spent on food :)