Reddit mentions of Fazer Ässä Salmiakki (Salmiak) - Original Finnish Salty Liquorice - Salmiac - Wine Gums - Bulk - Unwrapped - Candy - 200g

Looking at the Amazon US site, if you're not familiar with the different types of Finnish salmiakki, there's a 4-pack that would let you try different types:4 Boxes X 38g of Fazer Super Salmiakki Mix ((2) salmiakki - (1) super salmiakki - (1) pantteri) Original Finnish Salty Licorice

The "Fazer Ässä Salmiakki" is a sweet salmiakki, not as bitter if you don't like that.

Also great are the "Fazer Tyrkisk Peber"
I find them addictive, and they have a great burning sensation from the ammonium chloride (Latin sal ammoniacus, from which the name salmiakki comes)

Be warned though, it's an acquired taste and very different from North American candies:
Americans Try Finnish Candy: Tyrkisk Peber Turkinpippuri Salmiakki

If you're ever in Finland, definitely try Apteekin salmiakki, and the Fazer salmiakki ice-cream!