What is an edible forest garden?

What is an edible forest garden?
An edible forest garden is a perennial polyculture of multipurpose plants. Most plants regrow every year without replanting: perennials. Many species grow together: a polyculture. Each plant contributes to the success of the whole by fulfilling many functions: multipurpose. In other words, a forest garden is an edible ecosystem, a consciously designed community of mutually beneficial plants and animals intended for human food production. Edible forest gardens provide more than just a variety of foods. The seven F's apply here: food, fuel, fiber, fodder, fertilizer, and "farmaceuticals," as well as fun. A beautiful, lush environment can be a conscious focus of your garden design, or a side benefit you
-Dave Jacke

This poster is a WWII British print used to get people to leave ships for troop and war efforts. I think it is applicable today and will be even more soon. Did you know a ship uses 160 gallons of diesel per mile. It would be interesting to know the tonnage to see if its better than my car.