Method
In a large pot, bring the gallon of whole milk up to 200 degree F. Stirring frequently.
Once the milk has reached 200 degrees F, take the pot off of the fire.
Stir in the salt and citric acid to incorporate well.
After incorporating, stop stirring and let the milk set for 10 minutes.
After 10 minutes, start to skim the curds off of the top of the pot into a cheesecloth lined sieve and let drain.
Place in an airtight container and store in the refrigerator.