Normally (e.g. here) the recipe for oladyi (thick palm-sized pancakes) requires kefir, a fermented milk drink similar to a thin yoghurt or ayran.
There is one well-tested recipe that uses milk with lemon juice (or vinegar) instead: to begin, one has to heat the milk up to 36C-38C (body temperature), add 1tbsp of vinegar, let it rest for 15 min. I am guessing this is done to curdle the milk, right? Will this process work as expected if the milk is ultrapasterized?