The original recipe was based upon a very old recipe that I was given many years ago. It's been a while since this recipe was first published on Rock Recipes and some people have written over the years that they use considerably less baking powder in the recipe. Some have found that it affects the taste.
From my own experiments, though, I have found that you will still get very good results using 4 teaspoons of baking powder and 1/2 tsp soda.
You may want to consider those amounts first and increase it in later batches if you feel your biscuits need more lift.
The nutritional information provided is automatically calculated by third party software and is meant as a guideline only. Exact accuracy is not guaranteed. For recipes where all ingredients may not be used entirely, such as those with coatings on meats, or with sauces or dressings for example, calorie & nutritional values per serving will likely be somewhat lower than indicated.