Union Rental

I'm happy to help you learn more about the food item you mentioned, which is commonly found in restaurants in the USA. However, I believe there may be some confusion with the name of the dish, as I'm not familiar with a dish called "union rental."

Could you please provide more context or details about this dish? Is it possible that it's a misspelling or a variation of a different dish? Alternatively, it could be a regional or local dish that's not widely known outside of a particular area.

If you have any additional information or clarification about the dish, I'll do my best to help you learn more about it.