How to tell when a turkey burger is fully cooked?
I use an instant-read thermometer. It's by far the simplest method.

I use the Taylor 9842 Commercial Waterproof Digital Thermometer. As Darin states, you're shooting for 165℉ for turkey.



My old Taylor died a few weeks ago. After reading rave reviews from Cooks Illustrated, and Alton Brown's recommendation, I splurged and got a Thermoworks Thermapen. It is amazing!