Something like this https://www.amazon.com/dp/B0052O24HG/?tag=cioequipchart-20 works well. When I was a kid my grandma often had me help her make jam, and while paring knives and potato peelers with the tip for removing eyes work, the year she bought one of these, the job went MUCH faster. Just make sure it's one that's fairly sharp. I've bought a few since then, and dull ones are a pain to use.