Last week I delivered the "Designing for Disaster" module from our PDC to a group at a meditation retreat. Some of the participants were real "survivalists" and an excersise that usually attracts positive design concepts such as water storage and LETS trading and seed saving and food production, went a bit feral and was getting to escape tunnels and gun emplacements. Someone had a valuable idea that we need nutritious food that does not necessarily look like food to the uninitiated petrolhead. Casava and artichokes were two that were mentioned as food plants that could be passed over in a raid that saw your house cow and laying hens killed for meat. Similar to the thread on seeds to take when you hed for the hills - lets discuss plants that will sustain you but will not be readily recognised as food to someone who eats Macas'