I make Pecorino Sardo from our own cow's milk. I know it's a sheep's milk cheese by origin. *Sardo* is the hard, aged version, three months minimum, so the set should be slow and the gel soft at the cut, with fine grain.
What I do:
- Rennet dosed so flocculation lands around **22 minutes**. I time it with a bottle cap floating on the milk and blow on it; when it stops sliding and the surface moves with it, that's flocculation.
- The book says cut at **×1.3**, which is 28–29 minutes from rennet.
- I can't make myself do it. At ×1.3 the gel always looks too soft, like it'll shatter, so I wait. I usually end up at **×1.4–1.5**, around 31–33 minutes.
Last one was batch #16, the one that blew in the warm room (I posted it here): 85 L, 36 °C, pH 6.42 at renneting, 15 ml Hansen NATUREN Extra 220. It flocculated at 18 min, faster than the 22 I wanted, and I cut at ×1.4. Since then I've switched to Clerici 96/04, which is noticeably more active, so I'm re-finding the dose anyway.
I haven't made enough Sardo to know whether my hand or the book is right. That's the real question.
**Questions**
**If you cut a hard pecorino-style curd at ×1.3:** what does the gel look like at that point? Does it really pass a clean-break test, or do you cut on the clock and trust it?
**What changes in the cheese** between a cut at ×1.3 and ×1.5? Moisture, yield, texture at three months?
**Cow's milk instead of sheep's:** do you change the multiplier at all, given the weaker gel?