Photo: Juerg Vollmer from Zürich, Switzerland ; cut by Off-shell / Wikimedia Commons · CC BY-SA 2.0
The name comes from syr, Russian for cheese — in older Russian the word also covered fresh curd, which is why tvorog fritters carry it.
Syrniki are small fried patties made from tvorog curd cheese bound with egg and a little flour, pan-fried until the outside turns golden and slightly crisp while the inside stays soft. Market stalls and street cafés across Central Russia serve them hot with a dollop of sour cream, jam, or condensed milk.
Why it's made this way: Syrniki are eaten across Russia, Ukraine and Belarus, and grew out of the simple need to use up fresh curds before they spoiled, becoming a fixture of the Central Russian breakfast and market-stall table.