Preheat the oven to 325 degrees F (165 degrees C). Grease and flour a 9-inch tube pan.
Step 2
Beat together sugar and margarine in a large bowl until smooth and creamy. Beat in eggs one at a time, then stir in vanilla and lemon juice. Combine flour, baking powder and salt in a separate bowl; mix into egg mixture alternating with milk just until blended. Pour into the prepared pan.
Step 3
Bake in the preheated oven until a toothpick inserted into the crown comes out clean, about 1 hour. Cool in the pan for at least 10 minutes before inverting onto a wire rack to cool completely.