For sure you have to bring at least 2 tablespoons popcorn kernels, for each 1 popcorn kernel tablespoon you have to bring 1 canola or vegetable oil tablespoon .
it’s so easy it only takes one step which is :
Place popcorn and oil on heavy aluminum foil that is 18 inches square. Seal the edges to form a loose pouch to make room for the corn kernels to pop out. Tie one corner of the pouch to a stick with a rope. Shake the fire until it bursts.