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Kashk (also Kishik) is a form of dried yogurt used all over the middle east and central Asia as an ingredient. Sour Trahana is a second dried milk product used in Greece and the middle east. Where I live, I can purchase sour trahana, but not kashk.

How should I substitute trahana in recipes that call for kashk? Say, for example, in a soup recipe like ones that use kashk as a topping, or ones that use kashk as a base? What adjustments should I make?

FuzzyChef
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    I'd never even heard of trahana, so I can't offer an answer; but one thought: Iranian kashk is very salty. When you make ash reshteh, you need to be careful not to over-salt the soup, because the kashk will add so much salt on its own. That link about sour trahana you provided didn't mention anything about its being salty - if it's not, that's one adjustment you'd need to make. – Juhasz Nov 08 '22 at 18:10
  • Yeah, sour trahana isn't that salty. – FuzzyChef Nov 08 '22 at 19:33
  • Your profile suggests that you are in San Francisco. Is it really impossible to find kashk there? There seem to be quite a number of Persian specialty stores. Do none of them sell kashk? At least some restaurants seem to have it, and one presumes you could by it from them in bulk. [This article](https://www.washingtonpost.com/food/2021/03/12/liquid-kashk-recipe/) notes that many Iranian stores sell it under the name of whey, as well as suggesting a recipe to make it at home. – Obie 2.0 Nov 09 '22 at 02:46
  • Failing that, online ordering is probably an option. Here is [an example.](https://persianbasket.com/catalogsearch/result/?q=kashk) – Obie 2.0 Nov 09 '22 at 02:48
  • Oh, wow, I need to update my profile. Not in SF anymore. Portland. Checked out our couple of ME groceries, they don't have it. Anyway, my question is not "how do I buy kashk" but "what's the substitution between these two very similar ingredients"? – FuzzyChef Nov 09 '22 at 20:53
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    @FuzzyChef if you *were* asking where to get kashk, it's a bit of a drive from Portland, but if you're ever in Boston, [Super Hero's](https://www.yelp.com/biz/super-heros-watertown) has kashk. Arax, which is a couple blocks away might have it too. – Juhasz Nov 21 '22 at 19:31

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