False morel mushrooms. They are deadly poisonous if not cooked, closely resembling real morel mushrooms, being wrinkled and brown in the same way. However, morel mushrooms are symmetrical while false morels are irregular in shape and look like a brown brain, while true morels are more like a sponge. True morels have hollow stems while those of false morels are solid. Be careful to check each of these features before attempting to eat one. They have a fine flavour and are generally parboiled. They are popular in Nordic countries and in Finland especially.

Bullhead. Miller's thumb. The bullhead is a small variety of catfish with a large head, weighing not more than 450 g (1 lb). It has firm flesh with a mild flavour. The skin must be removed before cooking as it is tough and inedible. Bullheads are versatile as they can be poached, grilled, steamed or used in soups and stews.

Sevruga or stellate sturgeon. The Sevruga is the smallest but most prolific of the sturgeons.