The guidelines are simple: Only count what you grow or forage, no bartered or bought goods. You don't have to eat all of it yourself but, if the armageddon happened tomorrow, and you could stomach a daily diet of five eggs and half a pound of lamb, those calories would keep you alive.
A batch of runner bean chutney simmering on the stove gave me a chance to sit down and work out the math. As per Tamar's helpful suggestion, I used the USDA website for calorie counts, and referred to the table in the back of the Fannie Farmer Cookbook when I got stuck. There is only marginal rigour in my science (more mortis, than rigour) but I averaged, rounded down, and made conservative estimates just to be on the safe side.
As of the 240th day of the year, we have produced, harvested, or foraged a grand total of 474,931calories. That works out to 1978 calories a day to share between us. If Mike uses 3000 calories per day and I use 2000, then we're meeting about 32% and 48% of our calories, respectively.
With our hunting and livestock, we have a high protein diet; the lambs, hoggets, and eggs combined account for almost half of our total calories. If we were vegetarians, we would have starved to death by April 15th, (a great opportunity to skip out on paying our taxes but a fairly final solution.)
In fact, if our normal mild summers continue to devolve into long spells of cold and rain, we could lose even more of our non-protein food sources. The vegetable patch is a horticultural disaster zone: onions which we won't be able to store, underdeveloped garlic, non-existent carrots, a pea crop that produced enough for only three suppers. Our apple crop is the worst I've ever seen.
The bean crop is late but they're coming, and the promise of an Indian summer means my pumpkins and tomatoes will keep ripening. There's some hope for the winter kale and broccoli crops if I can keep the caterpillars away. But, whether we like it or not, we will be embracing the Paleo diet for the bulk of our calories.
I can add 2 jars of runner bean chutney to the next half of the 2012 Challenge list. It should be ready to eat in a few months, when fresh beans will be a memory.
750grams runner beans - 172 calories. Click here for recipe