How to Make a Cherry Port Reduction?
unless you’re someplace where cherries are in-season just use frozen. (also pitting cherries is a pita.) i would NOT use canned/sweetened for this, no way.
this from serious eats is very simple and you can omit the sugar if you want a sauce that is less sweet.
https://www.seriouseats.com/recipes/2012/11/cherry-port-sauce-recipe.html
fwiw, stay away from rando Reading More May Cause Envy…