Step 4: Adding the Rennet
Turn off the heat just before the thermometer reads 90°F.
Measure out a quarter of a cup of bottled (unchlorinated) water. follow directions of the rennet packaging.... My bottle of rennet says 'for every litre of milk, add 5 drops'
So for my recipe, 1 litre of milk, I added drops of rennet to a quarter cup of bottled water.
Mix the rennet through the milk for at least 30 secs. Leave the milk alone, off the heat, for at least 20 mins to curdle.