I strongly recommend going out to collect the wild strawberries (and wild bilberries!) if you’re ever visiting Europe when they’re fruiting. They’re one of the things I miss most about living in Europe. Even the best California strawberries picked ripe off the vine don’t come close.
Once in a while one of my local Russian restaurants or grocery stores will have wild strawberry jam imported from Europe. Usually $15+ a bottle and I buy out every single one they’ll let me (my favorite store now sets aside half the stock for me). They make the perfect gift too.
I've recently been on a hunt for farmer's cheeses and visiting Eastern European grocery stores, I'll have to look for that jam.
On the Bilberry front, I found a book about the vaccinium species of North America to try and identity the different huckle/blue/bilberrries around here. And the various rubus' that are not commercially grown but still taste good.
My partner and I are not Foragers(TM) but I'm always interested in food and I talked them into joining me on hikes in the spring as a chance to scout berry patches. So far it has worked. Unfortunately the cloudberries I found this summer were in a place I haven't been back to, so I still haven't picked them myself.
The word to look for is «земляника» since I don’t remember any English text on the bottles. Most of them are now from Belorus which I suspect is a dodge around sanctions.
Once in a while one of my local Russian restaurants or grocery stores will have wild strawberry jam imported from Europe. Usually $15+ a bottle and I buy out every single one they’ll let me (my favorite store now sets aside half the stock for me). They make the perfect gift too.