More great suggestions (although I wonder if the walking onions will walk themselves into my kitchen when they're ready for the pot?!)
The smallholding will have about 5 acres of established woodland/forest, mostly pines. I'm assuming that in the spanish sunshine I could experiment with growing bamboo, hemp, oats, flax, veggies, etc. in semi shade or small natural clearings.
Does anyone have any suggestions for the most useful shrubs and trees to grow in the Top Ten? I'm also aiming to experiment with grafting a variety of fruit and nut species onto already established relatives, to save money (and also cos I'm not getting any younger and don't want to wait twenty years to harvest them!).