Päärymä

Could you clarify what Päärymä refers to? The term is not widely recognized in a single, standard encyclopedic sense. It could denote a dish, a place, a surname, or something else, and I want to ensure an accurate, neutral article. If you have a context, alternate spellings, or a region (for example Finnish cuisine, geography, or history), please share it. Once clarified, I can write a concise wiki-style entry (under 300 words) in plain text.