Recently I began cold brewing coffee on a more regular basis to bring in with me to work. I don't have a Toddy or similar system, so I made do with what I have - basically I brew in a big pot using a fairly standard drip grind and then use my Aeropress to strain the concentrate from the grinds. which seems to work fairly well.
What I'm wondering, though, is this: what's your yield using a Toddy or a similar system and is it significantly different from mine?
I've found that when I brew 12 ounces of coffee in 7 cups of water, I only get about 4 cups of concentrate back. I might be losing a little to spillage and evaporation, but I'm assuming that the bulk of that loss is from the grinds soaking up extra water. I'm wondering if the toddy (or some other system) does any better or worse, or maybe if the grind makes any difference to the end yield.