The Maturation
The minimum maturation is 12 months (the longest minimum maturation for any PDO cheese), but Parmigiano Reggiano reaches a degree of maturation that fully expresses its typical characteristics at approximately 24 months. It can mature for up to 36, 48 months or longer, acquiring unexpected and unparalleled flavours and aromas. In maturation, thanks to the action of the enzymes released by lactic bacteria, proteins are broken down into smaller pieces, free peptides and amino acids - the basic bricks of the protein chain. This action of protein breakdown (proteolysis) determines the structure and sensory properties of Parmigiano Reggiano and its high digestibility.