Baltika is a brewery in Russia. They seem to organize their brews by number. Here's the scoop from Wikipedia:

Baltika is the largest brewery in Eastern Europe. It is based in Saint Petersburg, Russia.

* Baltika No. 0 is a non-alcoholic beer made from light barley marl.

* Baltika 2 (Pale Beer) is a lager brewed from pale barley malt, rice, and "exclusive varieties of hops."

* Baltika 3 is a 4.8% pale lager. This is also known as Klassicheskoe (Classic).

* Baltika 4 is a 5.6% amber coloured lager brewed from caramel and rye malts. Such coloured lagers are often termed Vienna. This is also known as Originalnoe (Original).

* Baltika 5 (Gold Beer) is a lager brewed with both pale and caramel malts.

* Baltika 6 is a bottom fermented 7% abv dark beer that the brewery classes as a porter "brewed according to traditional English recipes." Such strong dark lagers are often termed Baltic porters.

* Baltika 7 (Export Beer) is a pale lager.

* Baltika 8 (Pshenichnoe) is an unfiltered wheat beer.

* Baltika 9 (Krepkoe) is a strong lager (8% alcohol).

Wikipedia Entry: Baltika