Worldcook's Harvest without sowing
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Elderberry recipes

Chestnut recipes

Walnut recipes

Mushroom recipes

Sloes, daisies, nettles and
Some ingredients for a good meal may be found in nature totally free of charge. Nature itself sows them for you to harvest. The ingredients above I find in the woods close to my house; where you live you may find the same but also other edible stuff. Just be careful on the mushrooms: don't go and pick them if you are not an expert. In that case better visit the supermarket.