Why? Because you can! And pickle, and jam, or otherwise celebrate the resurgence of the domestic arts our forebears held so dear. Put on your best apron and step into our kitchen, won't you?
At the tail end of quince season, this butter is a great way to use quince too ripe for jam. Use a food processor if mashing fruit through a food mill isn't an option -- and throw in extra rosemary for a headier, more savory flavor.