Cheese, Chhurpi

⚠ UNTESTED. A briefing.

The Himalayan cheese of Sikkim, Nepal, Bhutan and West Bengal — and it is really two products separated only by how long you let it dry.

⭐ Soft chhurpi is fresh, mild and used as a cooking ingredient. Hard chhurpi — also called durkha — is the same cheese pressed and dried, sometimes smoked, sometimes for years, until it is famously the hardest cheese in the world: a baton you chew slowly for an hour on a walk rather than eat.

🔴 And it starts as a by-product. Yak or chauri milk is churned for butter first; chhurpi is made from what is left after the fat has gone. ⭐ The same logic as the whey cheeses — do not throw away something that still has protein in it — arrived at independently at 4,000 metres.

⚠ It is also acid-set with the previous batch, which puts it in the same family of back-slopped cheeses as mish.

Ingredients

• 2 gallons whole milk — yak traditionally; cow’s milk works
• About 1 cup soured whey or reserved curd from a previous batch — see the directions
• Salt, to taste, if you want it
• Cheesecloth, and something heavy and flat

Directions

Key ingredients

Salt

1. ⭐ Skim the milk first — properly. Traditionally the butter is churned out and chhurpi is made from what remains. That is not a compromise, it is the design: the low fat is what lets the hard version dry to stone rather than going rancid.
2. Heat the skimmed milk to about 175 F / 80 C, stirring so it does not catch.
3. 🔴 Curdle it with the previous batch. Stir in reserved soured whey or a little curd kept back from the last make until the milk breaks. ⚠ First time you will have to start with plain soured whey or a splash of lemon juice, and it will not taste like the real thing until you have run it a few times.
4. Strain through cheesecloth and press out as much liquid as you can. Traditionally under heavy stones.
5. ⭐ Stop here for SOFT chhurpi. Salt it lightly if you like, and use it within a few days — it is a cooking cheese, not a table one.
6. 🔴 For HARD chhurpi, keep going. Cut the pressed curd into batons about a finger thick, and dry them — weeks in cool moving air, or days of gentle cold smoke followed by more drying. ⚠ Thin and even matters: a thick piece dries on the outside and spoils in the middle.
7. Keep drying until it is genuinely rock hard. Months is normal. Years is not unusual.
8. What right looks like: the soft one is a firm, squeaky, mild fresh curd. The hard one should be impossible to bite — you hold a piece in your cheek until it softens, which takes the best part of an hour, and that is the intended experience rather than a fault.

Notes

Where this recipe came from — and what it is not 🔴 UNTESTED, and made traditionally from yak or chauri milk at altitudes and in air no domestic cave reproduces.

⭐ Three ideas this collection has already met, meeting again at 4,000 metres Use the by-product — as the whey cheeses do. Back-slop the starter — as mish does. Dry it to the limit — as aaruul does. ⭐ None of these traditions borrowed from the others. They are three independent answers to what do you do with milk when there is no refrigeration and the winter is long, and chhurpi uses all three at once.

⭐ The spine of these last cheeses: surface area Aaruul is a brick. Chhurpi is a baton. Rushan is a sheet wound on a stick. Tenili is a thread. Four cultures, none in contact with the others, all shaping dairy to expose as much surface as physically possible — because that is how you dry milk when there is no refrigeration and the winter is long.

⭐⭐ And then Tête de Moine does exactly the same geometry for the opposite reason — shaved into rosettes so that more of it meets the air and it smells more of itself. The same idea used four times to keep cheese alive and once to make it taste better.

⚠ On “the world’s hardest cheese” It is a claim you see everywhere and it is not a defined category — nobody is running a comparative hardness test on cheeses. What is true and checkable is that it is dried far further than any European cheese and is eaten by sucking rather than chewing. That is interesting enough without the superlative.

Read alongside the Caucasus and Central Asia and the other milks on the site.