Excellent pastry shop. There is a pahava, they can assemble a mix package for transportation home, in a special package so as not to soil anything.
A package of the mix costs about 230 lira for a little less than 500 grams.
They don't speak Russian, but an interpreter helps.
We were in this wonderful pastry shop, be careful, this is a pastry shop - not a bakery! Cakes, pies, cookies and amazing Turkish pastries... They work around the clock, the staff does not speak Russian, but Google translator solves everything.