Lentil Soup
This is about as unsophisticated as cooking gets. It's basically the same recipe that you use for cocido but instead of garbanzos I use lentils. I give away a lot of what I cook to friends which explains the Salvation Army soup kitchen-size pot. I figure that I will use the same amount of energy to cook a huge batch or a smaller one. I don't freeze stuff that I cook, I'd rather just give it away.