Turning out perfectly grilled foods in your own backyard requires balancing two important variables: time and temperature. Too hot, and the food gets overly blackened and burnt before it's cooked through. Too short, and the surfaces don't have enough time to caramelize, brown, and develop that characteristic charred flavor that makes grilling worth the effort in the first place.
A solid grill thermometer can help, but here's the bad news: standard bi-metal dial thermometers, the kind present in almost all backyard grills and smokers, can be off by as much as 75° F in either direction. Which, if you're going for low and slow cooked flavors of barbecue, is enough to totally ruin your meal and your day. Here's how to fix it.