Step 1

Preheat grill to medium heat. Meanwhile, combine broccoli, oil, salt, and garlic powder in a large bowl and toss to coat.

Step 2

Lay a 2-foot long sheet of heavy-duty foil on work surface. If using regular foil, use two layers. Pile the broccoli in the center and fold to wrap the foil into a packet. Crimp closed.

Step 3

Add the foil packet to the grill. Grill for 15 minutes, turning the packet over with tongs every 4 minutes.

Step 4

Remove the foil packet from the grill using a sheet pan and tongs. Use caution when opening packet, steam will escape.

Step 5

Transfer the broccoli to the bowl and drizzle with the vinegar. Toss to coat. Serve immediately sprinkled with sesame seeds.