Grilled Shrimp Packets

Bahan-bahan (6 porsi)

• 3 pounds Yukon Gold potatoes, (unpeeled and cut into ¾-inch chunks)
• 2 small yellow onions, (each cut into 6 wedges)
• 18 ounces smoked sausage, (cut into 1-inch rounds)
• 3 ears fresh corn, (husked and broken into halves)
• 3 pounds fresh or thawed frozen shrimp, (unpeeled)
• cajun seasoning
• garlic powder
• One 12-ounce bottle of beer ((or 1½ cups chicken broth or water))
• large-sized heavy duty aluminum foil