The recommended cooking time for a medium-rare steak on a gas grill can vary depending on the thickness of the steak, the temperature of the grill, and personal preference. However, here's a general guideline for cooking a medium-rare steak on a gas grill:

1. **Preheat the grill:** Preheat your gas grill to medium-high heat, around 400-450°F (200-230°C). Allow the grill to preheat for at least 10-15 minutes to ensure that it reaches the desired temperature.

2. **Prepare the steak:** Season the steak generously with salt, pepper, and any other desired seasonings. Let the steak sit at room temperature for about 20-30 minutes before grilling to allow it to come to temperature evenly.

3. **Grill the steak:** Place the steak on the preheated grill grates and close the lid. Grill the steak for approximately 4-5 minutes per side for a 1-inch thick steak, or until it develops a nice sear and grill marks on both sides.

4. **Check for doneness:** To check the doneness of the steak, use an instant-read meat thermometer inserted into the thickest part of the steak. For medium-rare steak, the internal temperature should register around 130-135°F (54-57°C).

5. **Rest the steak:** Once the steak reaches the desired doneness, remove it from the grill and transfer it to a cutting board. Tent the steak loosely with aluminum foil and let it rest for 5-10 minutes before slicing. This allows the juices to redistribute throughout the steak, resulting in a juicier and more tender final product.

6. **Slice and serve:** After resting, slice the steak against the grain into thin slices and serve immediately. Enjoy your perfectly cooked medium-rare steak!

It's important to keep in mind that cooking times may vary depending on factors such as the thickness of the steak, the temperature of the grill, and the desired level of doneness. It's always a good idea to use a meat thermometer to ensure accurate cooking and avoid overcooking the steak. Adjust the cooking time as needed to achieve your desired level of doneness.