Most small brewers prefer crafting ales rather than lagers because ale can be fermented in around two weeks, rather than up to 10 weeks for a lager, which ties up brewery capacity.

FORBES: Money on Tap

While Strefy Piwa has mainly Polish and Czech beers on tap -- including an India Pale Ale (IPA) made by Artezan, a small craft brewery near Warsaw -- the bar also offers a wide range of bottled brews from countries such as the US, Netherlands and Belgium.

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They uniquely offer a small batch version of Australia's other much loved brew - pale ale.

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