How Grana Padano cheese is made
https://www.granapadano.it/en-ww/how-grana-padano-cheese-is-made.aspx

Heat Once the whey has been added, the milk is brought to a temperature of 31-33°C(88-91° F) Rennet Once the whey has been added, the milk is brought to a temperature of 31-33°C  (88-91° F) and the calf rennet is added.

Press kit
https://www.granapadano.it/en-ww/press-kit-v1.aspx

  Once the milk has curdled after a natural whey starter and calf rennet have been added and heated to 31°C-35°C, the curd is chopped with a giant whisk (“Spino”).

Annie and Pad, grana padano
https://www.granapadano.it/en-ww/annie-and-pad.aspx

<br /> &nbsp;</p> ') + '&media=' + encodeURIComponent('https://www.granapadano.it/public/img/pagina-9-26722-27266-27288-27342-27364.jpg') , 'sharer', 'toolbar=0, status=0, width=626, height=436');">  While the milk is getting hotter, just like a chef following his recipe, Pad the cheesemaker adds the twomost important ingredients: the [...]

Annie and Pad
https://www.granapadano.it/en-ww/annie-and-pad-v1.aspx

  While the milk is getting hotter, just like a chef following his recipe, Pad the cheesemaker adds the two most important ingredients:  the whey  and the  rennet .

Rennet, grana padano
https://www.granapadano.it/en-ww/rennet-v1.aspx

Media > Glossary > Rennet Rennet Rennet is a liquid that helps the milk to coagulate, turning it into cheese.

INGREDIENTS
https://www.granapadano.it/en-ww/ingredients.aspx

Grana Padano > Grana Padano PDO > INGREDIENTS INGREDIENTS Grana Padano DOP cheese is produced with just a few, although exceptionals, ingredients: milk salt rennet  lysozyme* *N.B.: Lysozyme is not contained in all the types of Grana Padano on the market, such as Trentingrana....     RENNET  Rennet enables the milk to [...]

Curd, grana padano
https://www.granapadano.it/en-ww/curd.aspx

Media > Glossary > Curd Curd Curd is obtained by adding whey starter and rennet to the milk to make it coagulate.

Grana Padano properties
https://www.granapadano.it/en-ww/grana-padano-properties-v1.aspx

  The ingredients : Milk, salt and calf rennet, together with lysozyme.

Lisozyme & Grana Padano PDO
https://www.granapadano.it/en-ww/lisozyme-grana-padano-pdo.aspx

  Grana Padano is produced with raw milk to which rennet, lysozyme and salt are added.

Grana Padano and Parmigiano Reggiano - Particular aspects and specifications, Italian cheese
https://www.granapadano.it/en-ww/grana-padano-and-parmigiano-reggiano-particular-aspects-and-specifications-v1.aspx

Both also use of rennet that is of exclusively animal origin, and specifically of veal: with regard to this point, the assertion that the rennet employed to produce Grana Padano could be of vegetal or bacterial origin is totally false and unfounded.