How can you tell when hotdogs are cooked through?

Using a thermometer is the method that will provide you with the most reliable results in determining whether or not a hot dog is done cooking. Insert a thermometer designed for use with food into the center of the hot dog, either via one of the ends or along one of the sides. The United States Department of Agriculture (USDA) considers anything to be edible if it has an interior temperature of 160 degrees Fahrenheit or greater.