According to traditional knowledge, Finnish wizards would make weather ropes that would have knots on them. They would then sell those to sailors who could use them to summon favorable winds.
The grossest food pretty much depends on your taste. Lots of people don't like salmiakki and the various tar-flavored treats that Finns quite like. In my opinion, the grossest food is mustamakkara ("black sausage), which is a sausage made with meat, blood and flour and is eaten with lingonberry jam. This is what it looks like.
Bon Appetit!
Best Finnish food to me is usually the simple stuff. Karelian pies, new potatoes with butter, blueberry pie, grilled fish, rye bread with cold smoked salmon etc. The food is usually pretty simple, what makes it good is that most of the time you can pick your own berries, catch your own fish or bake your own bread. If you want decent Finnish food don't bother buying anything ready made from the story. You pretty much have to make it yourself, or get it fresh from the market. I'm particular to fried vendace with dip, which is available at most market places during summer. The fish in cleaned, rolled in flour and fried in butter. You eat everything but the head, including the skin and bones.
You can also get really, really good candy in Finland. Maybe that's just my biased taste, but I much prefer Finnish chocolate to Belgian or other European stuff. If you ever get the chance, pick up some Fazer stuff, everything they make is great. Geisha is also probably the most delicious candy ever made.