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There are two kinds of beers--and all "beers" are made primarily with barley malt--or exclusively from it, if you're dealing with beer that meets the Reinheigetsbot. There are other similar beverages that have other primary malts, or that use unmalted grains, but they have other names. Ex: weizenbier, wheat beer, is made from wheat malt. If it's a beer, it's made from barley malt.
Ales are top-fermented beers. The yeast floats on the surface of the beer while it's working. Ales get cloudy because it's hard to get all the yeast off, so yeah, cloudy ale is normal. It's also good for you--yeast is full of B vitamins. Think of it as a form of Vegemite that doesn't taste like shit.
(Yes, I am aware that there are Australians on this list and that I've just insulted the national food of Australia...which explains why I'm posting from behind a brick wall.)
Lagers are bottom-fermented beers. In the bottom of a lager fermenting vat there's always this thick layer of yeast. Before they remove the beer from the fermenting vat they throw a settling agent in to make the yeast sink.
Weizenbier is top fermented by German law, but it's not ale. Oh...and even BAD German Hefeweizen has the cloudiness, because it's bottle-conditioned: they throw a little yeast into the batch just before bottling it and let it carbonate the brew.
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