A free-range hen scratching around might lay one or two eggs a week. Feeding her costs nothing, giving a net gain of 50-100 eggs a year.

When I first got to Japan I was looking for free-range eggs but didn't have the vocabulary to ask properly, so I said "Do you have eggs from happy chickens that don't live in a box?"

Heat wok and add oil, add in chicken shreds. When the colour of chicken changed, dish up. Scramble the egg over medium heat. Dish up and save for later.