Converting Portions sizes
List of Ingredients
Ok we know how to convert yield now [and if you don't go read that under total yield ie how to go from 1 1/2 gallons of soup to 3/4 gallon]
Portions
first determine total yield by this formula
Original portions x original portion size = total yield
ie back to the soup
that 1 1/2 gallon recipe produced 48 servings of 4 oz each.
so: 48 x 4 = 192 oz
Step 2 determine total yield desired by multiplying new number of portions times new portion size.
You now want that soup to give you 72 servings at 6 oz each
so: 72 x 6 = 432 oz
step 3 obtain this conversion factor by:
total new yield/total old yield = conversion factor
432/192 = 2.25
THEN
Recipe
you multiply each ingredient quantity by the conversion factor:
Old quantity x conversion factor = new quantity
back to the cauliflowers
5 lbs cauliflower 5 x 2.25 = 11.25 lbs
4 celery stocks 4 x 2.25 = 9
1 onion 1 x 2.25 = 2 1/4
2 qt chicken stock
3 pints heavy cream
you finish the rest.