'the stewed one'), sometimes anglicised as stewler or simmeler, is a fermented milk product that is popular in Russia.

[1][2] Similar to ryazhenka, it is made by adding sour cream (smetana) to baked milk.

[2] Varenets is a fermented dairy drink with a caramel taste and creamy color.

Varenets was traditionally produced by baking milk in a Russian oven and fermenting it with sour cream.

[4][5] Ryazhenka is the Russian word for a very similar fermented dairy product.