Stop in for a cup of coffee

Powder crate. Originally anyway, would have been sealed in the tin spam can. Other languages would be either Swedish or Norwegian.
It's a box for loose powder, not fixed ammo.

Pulver is powder in German, plus I beleive that's the waffen

Kaste is "throw" in Norwegian.

"explosiv vara farglit" may be Swedish

So we have German words, Finnish words and Norwegian words and possibly Swedish.

It's a military Tower of Babel!

I have some notes somewhere with partial translations, but the ratatoille is done as is the sausages and rice.