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Whole raw cow milk is set at about 34 °C in a wooden tina vat with lamb or kid paste rennet and no added starter, so acid comes from the milk flora and the biofilm on the vat. The curd is broken to rice size, scalded with hot water, left on supports to dry about 20 hours, then sliced, stretched in water at about 80 °C and moulded into a long square block. The blocks are brined and ripen at least three months at 14–16 °C, traditionally hung in pairs on ropes.
Fully documentedCheese3 monthsPDO (EU), Reg. (EC) No 1263/96; national decree DM 2 May 1995; an amendment application was published in OJ C 216 of 27 June 2019Family: Pasta filata (stretched-curd) cheese family
Recipe
Amounts from a sourceThe decree gives conditions, not a batch recipe; blocks weigh 12–16 kg.
What changes:Lamb or kid rennet sets the raw milk in the wooden tina
Step 1 of 7
Set the raw milk in the tina
Time
1–1.3 h
Set
Temperature
31–37 °C
Set
Salt
None given
Acidity
Not documented
Which microbes the steps name, step by step
S. thermophilus
L. delbrueckii
Lactobacilli
Flavour
Not documented
Texture
Not documented
Colour
Not documented
Microbes at work in this step
no starter; Streptococcus thermophilus and thermophilic lactobacilli are released from the tina biofilm into the milk
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
Whole raw cow milk is set at about 34 °C in a wooden tina vat with lamb or kid paste rennet and no added starter, so acid comes from the milk flora and the biofilm on the vat. The curd is broken to rice size, scalded with hot water, left on supports to dry about 20 hours, then sliced, stretched in water at about 80 °C and moulded into a long square block. The blocks are brined and ripen at least three months at 14–16 °C, traditionally hung in pairs on ropes. Made in 7 steps over 3 months. The longest step, ripen in a ventilated room, takes at least 3 months (European Commission 2019) and runs at 14–16 °C (Disciplinare di produzione della denominazion…). Streptococcus thermophilus, predominant in the tina biofilms and Lactobacillus delbrueckii subsp. lactis and thermophilic lactobacilli released from the tina do most of the fermenting.
A stretched-curd cheese made from raw milk with no added starter, soured by the milk flora and the biofilm of the wooden tina, with the curd left about 20 hours on supports to dry before stretching. It is shaped as a long square block of 12–16 kg and ripened hanging in pairs or on slats.
Shape and size
Long block with a square section of 15–18 cm and length of 43–53 cm, 12–16 kg
Composition
Fat in dry matter at least 40 % for table cheese and 38 % for cheese aged over six months; moisture at most 42 %
Season
Production is concentrated in the fodder season, November to May
Ragusano da vacca modicanaMade only from milk of Modicana cows.
Ragusano affumicatoSmoked by natural methods.
Safety
Made from raw milk. A study of 15 tina biofilms found no Salmonella, Listeria monocytogenes or E. coli O157:H7, but it tested the vats, not the milk or the finished cheese. ANSES advises pregnant women, young children, people over 65 and people with weak immunity not to eat raw-milk cheeses other than pressed cooked ones such as Gruyère, because of Listeria, Salmonella and Shiga-toxin E. coli. Ragusano is a stretched-curd cheese that ANSES does not name, so do not assume it counts as one of those.
Hazards the sources name: Salmonella, Listeria monocytogenes and Escherichia coli O157:H7, tested for and absent from 15 tina biofilms.
Ragusano was regulated under Italian law for decades before the 1995 decree. The 2019 amendment set the three-month minimum ripening, raised the minimum weight to 12 kg and allowed ripening on slatted shelves.