One of the many charms of Istanbul is that you still find lots of street vendors, also called hawkers, everywhere.
They sell all kinds of merchandise or provide services like shining your shoes.
It reminds me of my youth in the south of the Netherlands where I saw them selling sweets, or shoe shine, or sharpening knives and scissors.
Here in Istanbul they sell for instance Simit, a circular bread, typically encrusted with sesame seeds, balloons, flags, eggs, and in Autumn also quince.
I bought 1.5 kilo of these beautiful quince and prepared some delicious quince compote.