Reddit mentions of Karl Fazer Wiener Original Soft Almond Nougat

I would recommend wiener nougat. It's classy and usually found in fins Christmas bags as well. Also geisha of course. Don't know if these are snacks tho, at least not savory.

Here's couple links if you're an American,

Fazer Geisha Chocolates with Soft Hazelnut Filling Small Box 5.3 Oz (150g)
https://www.amazon.com/gp/aw/d/B001S1FRWQ/ref=pd_aw_sim_325_1?ie=UTF8&psc=1&refRID=DPHJG2MNAHXT5D5DH1ME

Karl Fazer Wiener Nougar Original Soft Almond Nougat
https://www.amazon.com/Fazer-Wiener-Nougar-Original-Almond/dp/B000YBZEW4

One of the only candies which has stayed same since 1904.

So are you abroad and the teacher is Finnish and he's leaving back to Finland? Maybe he has stayed a year or two abroad? Any details would be helpful.

While Sauna is very Finnish I doubt it makes good presents, especially for a male. Sauna hat, perhaps?. Here's another. It's funny, it's got the red star of Soviet Finland (SF).

Maybe something more generic, like Finnish chocolate

• Fazer Blue
  
• Fazer Wiener Nougat
  
• Fazer Geisha