Firstly, make sure you have a fire and/or coals going (or set up your propane grill). Roll out 18” inches of aluminum foil, then roll out 16” inches of parchment (you want the parchment paper to be a little smaller than the foil). Assemble your ingredients in the centre of the parchment paper, starting by layering the ingredients that will take the longest to cook on the bottom like the corn and zucchini - the bottom will receive the most heat, which will speed up the corn and zucchini cook time. Then add the sausage and prawns. Finally, add the garlic, butter, and spices. To seal the packets, bring the two short edges of the aluminum foil together and fold together to form a seam. Then roll the ends in towards the middle, so you have two seams on the edges with a long one running down the side. Place the packets over your fire pit grate or grill. After about eight minutes, take off the heat and let the packets cool down for a minute. Add a handful of chopped parsley, a squeeze of lemon - and voilà!