Peroni Beer Gran Riserva Doppio Malto beer Peroni Beer Gran Riserva Doppio Malto 50 cl. Lazio, Italy. Birra Peroni Gran Riserva Doppio Malto is an Italian beer with a slightly spicy aroma. It is brewed by blending special caramelised malts and aromatic hops in a long mash at low temperature. Ingredients (ingredients and allergens may be subject to change, so it is important you check the labels supplied in each delivery). Water, Barley Malt, Hops 6.9% ABV