Pour 2069 g milk into a large pot and warm it over medium heat until it comes to a full boil.
Stir in 30.6 g lemon juice to curdle the milk, heating until the solids separate clearly from the liquid whey.
Line a colander with a clean piece of muslin and pour the mixture through to collect all the curds.
Bring the corners of the fabric together and tie them into a bundle, then suspend the pouch over a bowl without squeezing so the remaining liquid drips out completely.
Set the wrapped curds into the sink or onto a flat draining tray, place a heavy weight on top, and leave pressed for 2 to 3 hours until firm enough to slice into pieces.