Complex sentence: In Latvia "pīrāgi" (or "speķa rauši", literally, "bacon tarts") are crescent-shaped soft bread buns which are baked (not boiled) and traditionally filled with bacon and onion.
Split into simpler sentences: In Latvia "pīrāgi" (or "speķa rauši") are crescent shaped buns made with bread dough. They are baked (not boiled) and usually filled with bacon and onion.