The daily cost of everything that I eat and drink has been almost exactly $13.000 for some time (at least several months). That includes all the eggs, chicken, and butter that I have the desire to eat, as well as all of the bottled water, coffee, and milk that I have the desire to drink. If I eat roast beef twice a month, my average daily cost increases to $1.3333.
At the lower exchange rate it costs roughly $9.50 USD per day to fully satisfy my apetite. At the higher rate it's close to $9.00 USD.
PS: I am paying $3,000 pesos per kilo for the chicken, $11.000 per kilo for the roast beef, $2.690 for 200 grams of butter, $1.300 for a litro of milk, and $260 pesos per litro of water. I calculate the cost of the Nescafe instant coffee to be less than $1.000 per day. The cost of the grasa bovino which I use to cook the eggs is insignificant and is the cost of the pinches of salt that I use to season the eggs and the chicken.
PS2: Two months ago the chicken wings cost $3.200 per kilo, so there's a slight reducction.
Eggs have remained the same price for most of the year: $15.000 for 5 dozen (a two week supply). I buy the milk and the coffee on Mercado Libre, as the prices are lower than in the supermarkets here and I like recieveing two boxes of 12 litros of milk delivered directly to my door.