Short answer
Ginger itself is safe for cats in tiny amounts, but it's often found in items that aren't. Be cautious with Asian stir-fries, many soups and broths, gingerbread cookies, some herbal teas, and certain supplements or candies. While a tiny taste of plain ginger is unlikely to harm your cat, these other foods often contain onion, garlic, sugar, or spices that are problematic. It's best to offer your cat only food meant for them and call your vet if they eat a significant amount of any ginger-containing product.
Ginger — Food safety facts
Safe to share · Cats · full breakdown on the linked food page
A small pinch of fresh ginger can settle a stomach. Large amounts irritate it.
The full verdict, portion guidance and serving notes are collected on the Ginger food facts page.