To wrap food with aluminum foil, first clean your hands and ensure the foil is shiny side out. Cut a piece of foil large enough to cover the food completely. Place the food in the center of the foil. Bring the edges of the foil together over the food, then fold and crimp the edges to seal tightly. Ensure there are no gaps to prevent the food from drying out or the foil from tearing. For more complex shapes, you can double the foil and create a pouch or tent, folding the edges to secure the shape. Always handle food with clean hands to maintain hygiene.