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Whole milk of Lacha and Rasa sheep (Assaf and Lacaune allowed since 2008) is set with natural rennet in at most one hour at 30–37 °C, and the curd is cut slowly to rice-size grains. The curd is moulded and pressed, salted dry or in brine for at most 48 hours, and ripened at least 4 months from the end of salting, with turning and cleaning, into a hard cheese with a thick brown or straw rind.
Fully documentedCheese4.1 monthsPDO (EU), registered by Reg. (EC) No 1107/96; specification amended by Reg. (EC) No 1204/2003; national regulation by Order of 2 March 1981; a further pliego amendment (Navarre Resolution 1731/2008) was sent to the Commission on 24 November 2008Family: Hard pressed ewe cheese family (Manchego and Pecorino Romano as templates)
Recipe
No fixed amounts recordedThe specification gives conditions, not doses. Cheeses are 8–12 cm high; weight and diameter vary.
Whole, clean sheep milk with no preservatives, from registered flocks
The regulatory council says nothing enters the raw-milk cheese beyond the milk, animal rennet and salt.
Total time across the recorded steps: 4.1 months
Start
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What changes:Natural rennet sets the warm sheep milk within an hour
Step 1 of 5
Set with natural rennet
Time
up to 1 h
Set
Temperature
30–37 °C
Set
Salt
None given
Acidity
Not documented
Which microbes the steps name, step by step
Lactobacillus paracasei
L. plantarum
The 1994 summary sheet gave 32–37 °C for at least one hour.
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
Whole milk of Lacha and Rasa sheep (Assaf and Lacaune allowed since 2008) is set with natural rennet in at most one hour at 30–37 °C, and the curd is cut slowly to rice-size grains. The curd is moulded and pressed, salted dry or in brine for at most 48 hours, and ripened at least 4 months from the end of salting, with turning and cleaning, into a hard cheese with a thick brown or straw rind. Made in 5 steps over 4.1 months. The longest step, ripen, takes at least 4 months (Ministerio de Medio Ambiente y Medio Rural y…). Lactobacillus paracasei and L. plantarum (wild strains), added as an adjunct to a commercial starter in trial batches of Roncal-type cheese from pasteurised milk; they brought its flavour score close to that of the raw-milk cheese does most of the fermenting.
Made and ripened only in the seven villages of the Roncal Valley, with at least half the ewes of the Lacha breed. Its national regulation dates from an order of 2 March 1981.
Composition
Fat at least 45 % of dry matter; moisture under 40 %
Between the 10th and 13th centuries the Roncal Valley kept about 80,000–100,000 transhumant sheep. The cheese appears on page 431 of El Practicón (1893), and old tools such as the beech kaiku and moulds are kept in museums. The Lacha breed was admitted for Roncal milk in the 1960s because the cheese was at risk of disappearing, and Assaf and Lacaune in the 2008 pliego. The name was recognised provisionally by an order of 26 July 1975, and Regulation (EC) No 1204/2003 of 4 July 2003 amended the pliego's rennet-time and curd-temperature wording.