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Fermentation Atlas

Cheese from Italy

Mozzarella di Gioia del Colle DOPMozzarella di Gioia del Colle

Fresh cow-milk pasta filata; lactose ≤0.6 %, lactic acid ≥0.20 %, moisture 58–65 %, fat 15–21 % (as is); spheres, knots or plaits of 50–1,000 g. Made in 5 steps over 2.3 h. The longest step, cut to hazelnut size and mature the curd under whey, takes at least 2 h (Domanda di registrazione 'Mozzarella di Gioia…). thermophilic lactic acid bacteria of the natural whey starter does most of the fermenting.

Key numbers
Main stepat least 2 hSet[eu-application][eu-reg][onaf-sheet]Cut to hazelnut size and mature the curd under whey
Temperature42–44 °CSet[eu-application][eu-reg][onaf-sheet]Prepare the whey starter
AciditypH 5.1–5.4Set[eu-application][eu-reg][onaf-sheet]Mince and stretch in hot salted water

Recipe

No fixed amounts recordedWhat goes in. No source gives amounts for this ferment.
whole cow milk
raw or thermised or pasteurised
Starter: backslop: natural whey starter (siero-innesto) from the previous day's make, from the same dairy or the production area

Total time across the recorded steps: 2.3 h

Start
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Milk sugarLactic acid42–44 °Cshapes, not to countLactic acid bacteria

What changes: Whey from the last make sours into a whey starter

Step 1 of 5
Prepare the whey starter
Time
until acidity reaches 22–28 °SH/50 ml
Unconfirmed
Temperature
42–44 °C
Set
Salt
None given
Acidity
Not documented
Which microbes the steps name, step by step
Lactic acid bacteria

Output: siero-innesto (2–10 % of the vat milk).

Flavour
sour whey
Texture
liquid
Colour
Not documented

Microbes at work in this step

native lactic flora of yesterday's whey multiplies and acidifies

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

Variants

  • Sferoidale / nodo / trecciashape only (sphere, knot, plait)

Safety

Raw milk allowed; the ≥85 °C stretch is the main kill step. Eat fresh.

History and sources

Every number is labelled with how it is known. How this atlas is made

Registered as a PDO in 2020 (Reg. (UE) 2020/2018, application in OJ C 2019). The spec stresses the natural whey starter as the traditional link to the Murge.

  1. [eu-application] Domanda di registrazione 'Mozzarella di Gioia del Colle', GU UE C 2019 (CELEX 52019XC1021(01)), via ONAFspec
  2. [eu-reg] Reg. di esecuzione (UE) 2020/2018 (registration), via ONAFspec
  3. [onaf-sheet] ONAF technical sheet 'Mozzarella di Gioia del Colle' (id 354)web