The process of lagering come form Bavaria,Germany.It was invented around 200 years ago.They figure out that second fermentation of beer will produce a different taste and aroma than ale.For that purpose they store the casks in ALPS'S caves to improve the process of lagering.

The process of lagering became very popular in areas where fermentating with cool temperatures could be maintained, although it wasn't until the invention of the refrigerator that lagers really spread around the world.

Over the last several years, flat sales have been seen for breweries as a growth in sales for American microbrews. Even though a lot of the beer volume from lager is composed of cheap quality product from the large breweries, there's plenty of great products available, although most are from Europe.

European all malt Pilsener
Pilseners are the most popular style around the world. The style originated in Bohemia in a town that was named Pilsen by the brewery. Even though there are some superb Pilseners made outside this region, the style is frequently cheapened and is also the basis for many beers lacking quality or being just plain ol' cheap beer.

German Pilsener
Classic German Pilseners are very light in color and well hopped, with the hop bitterness being high. It's a well attenuated, medium bodied beer although a malty accent can be perceived. There shouldn't be any chill haze, as the head of the beer should be dense and rich.

Bohemian lager
Lagers in this category are very similar to German Pilseners, although they are more full bodied and can be as dark as light amber. This style of beer will balance the moderate bitterness and noble hop aroma with a malty, yet slightly sweet
body.

Hope you get the basic info about Lagering as a process and the different types of lager beer.As you see it is simlple but efective process which make the taste and feeling of beer triple.Have fun and enjoy one.

Lagers-Beer microbrewing