It is recommended to soak dried shiitake mushrooms (pasania mushroom, shii-take) before preparation. This way they go well with risotto, soups, etc. (Organic?)
The harvest of summer squash, which cannot be stored, takes place before it ripens in the summer. These include different varieties of different types of squash
The cyanobacteria Spirulina (powder etc.) can practically never be bought raw. Because of their blue pigment, they were previously classified as blue-green alga
The velvet foot bolete or enoki is popular in Asia, where it is cultivated. The natural winter mushroom is in season from September to April (raw?, organic?).