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Some brewers also adjust the water chemistry when creating Itailan pilsner, as Jeff Alworth explains in his book
Secrets of Master Brewers. The adjustment typically involves the pH level of both the mash and the sparge liquor. If you find this level of beer geekery appealing, you need a copy of
Of course, I should point out that the most significant difference between Italian pilsner and other styles of pilsner is the label. Without fail, you can expect an Italian pilsner to feature the word
Italian on the label. Seriously. Most craft brewers would not put that word on the label unless it deserved to be on the label, but no laws exist to prevent using the word