Side-by-side or overlay PDF diff driven by one engine that reads each file into a structured model — text, vector geometry, images, form fields, annotations — and compares the models. Moves show as moves, edits show only where they happened, and any PDF type works without picking a mode.
Open a STEP / STP part and it measures itself — volume, thinnest wall, draft and undercut checks on load, plus hole detection with a BOM. Measure, section, export STL. Rust + WASM B-rep kernel, runs in your browser.
A ball of butter churned from whey cream is sealed inside a pouch of stretched cow-milk curd, brined and ripened at least two months. Shepherds devised it to keep butter away from the air for weeks. Sliced across, it shows a white or pale yellow butter heart. Made in 7 steps over 2 months. The longest step, ripen in a cool, airy room, takes at least 2 months (ERSA Molise (Agenzia Regionale per lo Svilupp…). Lactic flora of the whey starter, which acidifies the curd and keeps unwanted flora down does most of the fermenting.
Starter: whey starter (siero-innesto) from earlier makes
Total time across the recorded steps: 2 months
Start
Drag the bar or press Play
What changes:Cream from leftover whey is churned and the butter separates out
Step 1 of 7
Churn the whey butter
Time
24 h
Reported
Temperature
Not documented
Salt
None given
Acidity
Not documented
Which microbes the steps name, step by step
Lactic acid bacteria
The whey left from an earlier stretched-curd make is centrifuged to take off its cream. Output: whey butter, formed into balls firmed in running water.
Flavour
butter
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
What makes this one different
Burrino hides a heart of whey butter inside a casing of stretched cow-milk curd and is ripened at least two months. Burrata, by contrast, is filled with cream and curd shreds and eaten fresh.
Rind
Very thin, glossy, straw-yellow (especially when made in spring)
Size
200–300 g; 6–8 cm across; round with a small head
Fat
60–70 % fat in dry matter
Boundary
The butter heart is churned cream, not a ferment; only the casing is cheese
MantecaThe name used in many southern Italian regions, from Spanish mantequilla (butter).
Safety
The regional sheet notes that the raw milk comes from cows free of brucellosis and tuberculosis. When contamination is more likely, the milk is heat-treated and more whey starter is added. Souring the curd and stretching it in water at 90 °C, which brings the paste to about 64–65 °C, further cut unwanted microbes.
Shepherds in inland southern Italy devised it to keep butter; sealed in stretched curd away from the air, it kept for many weeks. It is cited in La Cucina Italiana (July 1960) and the INSOR atlas of typical cheeses.