I like vareniki but I tried only ones with cherries. Blackberries and elderberries are too difficult to get where I live, at least in the stores close to my home.

The ripping open problem is the reason why I prefer eating very small pelmeni, which, even when torn, just don't look and feel as gross as even well-cooked pelmeni of normal size.

It's ironical that I've recently developed interest in cooking, but mostly avoid Eastern European cuisines - way too difficult to cook, and the taste is often too soft and bland for me.