As you might have already seen you can get fresh mushrooms in all the supermarkets at the moment. But much better than buying them is to pick your own ones. And it’s fairly easy. To find forest around Helsinki shouldn’t be too much of a challenge for anyone.
When you are out there in the woods the easiest is to keep your eyes open for Suppilovahverot (Craterellus tubaeformis). They are very popular in Finland and are quite easy to find. You will always find them in groups and they can be well spotted through their yellow feet.
What you need for mushroom picking is a basket, a knife (don’t rip them out), sturdy footwear and water-proof clothes. And of course try not to get lost in the forest.