sysytään

Could you clarify what you mean by "sysytään"? I’m not finding a reliable, widely recognized reference for this term. Is it a Finnish word (and if so, what is its exact meaning or root), a place name, a brand, or a fictional/neo-coined term? If you can provide context or a source, I can write a concise, neutral wiki-style article (under 300 words). If you’d like, I can also create a fictional encyclopedia entry for "sysytään" with a plausible background.