Knowing how hot the grill is can be a little tricky. Even if your grill has a thermometer built into the lid, you still can’t tell how hot it is down on the grate where all the cooking happens. That’s why we were happy to discover this grill surface thermometer from CDN. Small and easy to read, it sits right on the surface of the grill grates. We grew to love it while testing thebarbecue-braising recipes, all of which call for maintaining 350°F for up to several hours.