Potato peels are one food waste that should almost never be run though a garbage disposal. Thin peelings can literally slip between the disposal blades and get stuck in the trap, the U-shaped pipe the connects to the disposal. The peelings will quickly clog the drain. A plunger probably won't work to get them out. The only way is to take off the trap and fish out the peelings.
Potatoes also can generate a starchy plug that can flow out of the trap into the wall pipe. At that point you'll likely need a plumber's drain snake (auger), according to hunker.com.
Rick Good spent ten years in the newspaper business, including with The News & Observer (Raleigh, NC) and The Greenville News (Greenville, SC). He co-wrote, with Melinda Coleman, Rutledge to Riley: Governors of South Carolina, 1776–Present (Published by The Greenville News), and is the author of Mind Games Trivia #1 (Amazon). He has recently spent 15 years creating original trivia content through Sounds Good Mobile Entertainment and continues that with his new company, SGME Software. He edits The Smart Reader’s money, real estate, and business coverage.