Preheat oven to 300 degrees F (150 degrees C). To prevent burning you can bake on an air cushion baking sheet or put parchment paper on a regular cookie sheet.
Beat egg whites, salt, cream of tartar, and vanilla until very firm. Gradually add sugar and mix. Fold in chocolate chips.
Drop by teaspoonfuls on pan. Bake 300 degrees for 25 minutes. They should only be lightly browned.
