I like Quark

Indeed. it is tasty. it has kind of a weird consistency- somewhere between sour cream and cottage cheese. it tastes fantastic when mixed with jam. You can also buy quark like this:

where it comes whipped and mixed with fruit. nice. also very tasty.

To actually figure out what quark is, i have included this link to wikipedia:

http://en.wikipedia.org/wiki/Quark_cheese