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Cheese from Italy, Lombardy, upper Brembana valley
Formai de Mut dell'Alta Valle Brembana PDOFormai de Mut
A fatty, semi-cooked cheese of raw whole cow milk from the upper Brembana valley in the province of Bergamo. The milk is set with bovine rennet at 35–37 °C, the curd is broken and half-cooked to 43–50 °C, moulded in 'fassere' and salted dry or in brine. It ripens at least 45 days, and more than 6 months for 'Riserva'.
No fixed amounts recordedThe specification sets temperatures and times but no amounts of milk or salt. A wheel weighs about 8–12 kg (up to 10 % more or less).
Raw whole cow milk with low natural acidity
Cows eat green and/or hay forage from meadow or pasture, at least half of it from the area; silage is no longer allowed[mut-am2022]
optional natural starter culture or selected ferment; the native flora of the raw milk and the dairy carries the ripening
Total time across the recorded steps: 45 days
Start
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What changes:Bovine rennet sets the raw whole milk at 35–37 °C in about half an hour
Step 1 of 5
Set the raw milk
Time
30 min
Set
Temperature
35–37 °C
Set
Salt
None given
Acidity
Not documented
A natural starter or selected ferment may be added. The amendment approved in 2023 allowed it because the bacterial load of incoming milk has fallen and the milk now reacts less in the vat.
Flavour
Not documented
Texture
Not documented
Colour
Not documented
Microbes at work in this step
Not documented for this step.
Method
Measured measured in a studySet fixed by a specification or tested recipeReported one source reports itTypical a general value, not sourced for this fermentUnconfirmed not yet checked against a source
At a glance
A fatty, semi-cooked cheese of raw whole cow milk from the upper Brembana valley in the province of Bergamo. The milk is set with bovine rennet at 35–37 °C, the curd is broken and half-cooked to 43–50 °C, moulded in 'fassere' and salted dry or in brine. It ripens at least 45 days, and more than 6 months for 'Riserva'. Made in 5 steps over 45 days. The longest step, ripen, takes at least 45 days (European Commission 2022).
A raw whole-milk cheese only half-cooked, to 43–50 °C, made in the upper Brembana valley; valley cheese carries a red mark and cheese made on the pastures from 20 May to 20 October a blue one.
Size
Cylinders 30–40 cm across and 8–10 cm high, weighing about 8–12 kg
Fat
At least 42 % fat in dry matter (lowered from 45 % by the amendment approved in 2023)
Ripening
At least 45 days; 'Riserva' after more than 6 months
Marks
Red mark for valley cheese; blue 'd'alpeggio' mark for cheese made on the pastures from 20 May to 20 October
The cheese is made from raw milk. The 2022 application to amend the specification removes silage from the cows' feed because it can carry Clostridium spores and is a critical point in making and ripening the cheese. The minimum ripening is 45 days. ANSES advises pregnant women, young children, people over 65 and people with weak immunity not to eat raw-milk cheeses other than cooked pressed ones such as Gruyère or Comté, because of Listeria, Salmonella and enterohaemorrhagic E. coli. It does not say whether half-cooked cheeses like this one count.
Hazards the sources name: Clostridium spores, which silage can carry into the milk; the applicant removed silage from the permitted feed for this reason.
The upper Brembana valley was an administrative unit with its own statutes from 1364, confirmed under Venetian rule. The name joins the dialect words for cheese (formai) and mountain (mut). A decree of 10 September 1985 (published 16 May 1986) recognised the designation and set its production rules. The name was registered as a PDO by Regulation (EC) 1107/96 of 12 June 1996. The producers' application to change the rules was published on 26 October 2022 and approved by Implementing Regulation (EU) 2023/342 of 9 February 2023; it widened the curd-cooking range, allowed a natural starter, lowered the minimum fat and ended silage feeding.