Okroshka with kefir turned out to be "wrong" according to GOST.
The new standard for Russian cuisine determines the traditional okroshka composition: meat, poultry, game or fish, cucumbers, green onions, herbs and kvass. That's all.
So versions made with kefir, mineral water or whey do not work in this recipe.
The standard describes in detail the recipes for 133 dishes. True, no one will be forced to follow clear rules - GOST is voluntary. Cafes and restaurants can cook according to their recipes, but it will no longer be possible to say that their okroshka meets the standard if the composition is different.