I have a patch of Gaultheria shallon which is horribly invasive and to me a weed. However it does have interesting blue-blackberries which apparently are edible. So I harvested these yesterday and made some jelly from them. From 700g of berries (about two pints) I got about 400g of juice which I added to 250g sugar to get about 500g of jelly. The jelly is very sweet and intensely flavoured (in a good way!).
Apparently the berries are high in pectin so I could probably have used less sugar. I have also read that the berries and jam/jelly made from them are efficient appetite suppresors. Now who would have imagined jam being part of a diet .
Anyone else make culinary use of their weeds?