Preheat oven to 375� F. In a large bowl, cream shortening with a fork, add sugar then vanilla and egg. Mix well. In another smaller bowl, mix baking soda, salt and flour together, then add to shortening mixture. Mix well. Batter will be a little stiff. Add chocolate chips. Drop by spoonfuls onto a cookie sheet about 2" apart. Cookies turn out better if they're not formed into a ball, but left in a glob on the cookie sheet. Bake 8 minutes, let cool then gently remove from pan. Cookies freeze well for about 8 months to a year.