What is a key piece of equipment used for grilling?

A grill thermometer is a key piece of equipment used for grilling because it allows the cook to accurately monitor the internal temperature of the food being grilled. Ensuring that meats, especially, are cooked to a safe temperature is crucial for food safety, as undercooked meats can pose health risks. A grill thermometer helps in achieving the desired doneness for different types of meat, whether it's rare, medium, or well-done, which enhances the eating experience by ensuring optimal texture and flavor.

In contrast, a blender and a food processor, while useful in food preparation, are not specifically designed for the grilling process itself. A microwave is also not suitable for grilling, as it primarily cooks food through radiation rather than direct heat, which is essential for creating the characteristic grill marks and smoky flavor associated with grilled foods.