Preheat oven to 350 degrees. In large bowl, cream butter and sugar. Add eggs, one at a time, beating well after each. Add flour and 7-Up alternately, mixing well after each addition. Fold in lemon juice and vanilla. Bake in a greased and floured 25 cm tube pan for 1 hour and 15 minutes. Cool on wire rack and remove from pan. source: from a country western magazine ----