When people make fortune cookies, they use a big mixer to stir together flour, sugar, eggs, water, food coloring and vanilla. This mixture is called cookie batter. And when its been mixed just enough, it's poured out of the mixer and into big buckets.    The batter is poured into another big machine where it travels down through plastic tubes and is squirted onto little round baking pans. The baking pans move on an conveyer belt into an oven where the batter is baked into cookies.    Then the fortunes are added. The machine picks a fortune, puts one into each cookie and at the same time, folds the cookie into the right shape.    The cookies drop into boxes. Once they've cooled, a person puts them into bags, weighs each bag and closes it up tight so the cookies will stay fresh and people can enjoy them.