1 cupful water 1 teaspoonful salt 1 teaspoonful sugar 3 1/2 cupfuls flour 1/2 tablespoonful butter 1/4 cake compressed yeast 1/4 cupful water
By weighing and measuring one finds:
1 pound sugar measures 2 cupfuls 1 pound butter measures 2 cupfuls 1 pound flour measures 4 cupfuls
Then,
1 teaspoonful sugar weighs 0.16 ounce 1/3 tablespoonful butter weighs 0.25 ounce 3 1/2 cupfuls flour weigh 14.0 ounces
(From data of How the Fuel Value of a Food Material is Measured.)
1 teaspoonful sugar yields (113 x 0.16 =) 18.08 Calories 1/2 tablespoonful butter yields (217.88 x 0.25 =) 54.47 Calories 3 1/2 cupfuls flour yield (100.98 x 14 =) 1413.72 Calories 1 loaf of bread yields (18.08 + 54.47 + 1413.72 =) 1486.27 Calories
For the practical method of calculating diet (which is more fully treated in Lesson CXXXI), it is convenient to have the 100-Calorie portion of a recipe, or a "made" food.
The 100-Calorie portion of bread is estimated from the result above in the following manner:
Since 1486.27 Calories are yielded by one loaf of homemade bread, then 100 Calories are yielded by (100/1486.27 =) .06 or 6 per cent of a loaf of homemade bread; hence, 1/16 (6 ) or 1 slice of homemade bread yields 100 Calories.