What is used when grilling 8 oz sirloin steaks and 10 oz ribeye steaks?

Using butter when grilling 8 oz sirloin and 10 oz ribeye steaks enhances the flavor and richness of the meat. Butter not only imparts a delicious taste but also helps achieve a beautifully browned crust on the steaks due to the way it interacts with the high heat during grilling. The milk solids in butter caramelize and contribute to the steaks' overall appearance and flavor profile.

Additionally, butter can provide a moisture barrier, which helps to keep the meat tender while also promoting a more flavorful crust. This technique is often used by chefs to elevate the taste of steaks, especially cuts like sirloin and ribeye, which benefit from the added richness that butter provides.

In contrast, other options like olive oil, vegetable oil, and cooking spray do not have the same depth of flavor and characteristics when used for grilling steaks, which is why butter is typically favored in this scenario.