As a matter of practice, one simply shouldn't put anything down a sink drain save gray water or water. Never-the-less, "stuff" does get washed into the drain, including cooking ois/fats et al. Raritan CP is an enzymatic cleaner developed by Ms. Peg Hall (aka "The Head Mistress") before her company sold the product to Raritan that works by "digesting" the compounds that typically foul piping. It cannot damage the piping or fittings but is particularly effective at cleaning them out.
FWIW...
Residential systems are totally different than marine drains. I could not imagine putting enough garbage down my galley drain to clog the pipes which are essentially a straight shot down to the thru-hull. Not trying to bash Pegs product.
My galley sinks drain to a gray water tank. A hand pump empties that.
We wipe pans and throw dishwater overboard. If we don’t take care that tank gets stinky.
We use CP in the gray water tank and it helps the odors.