Homemade soy milk and tofu - step by step, part 2

My first tofu.

So, after making your own soy milk from beans, you're left with about 2 liters of fresh soy milk.
It's time to turn it into tofu!
(The tofu you make at home will come out as "cotton", not "silken", just for the record.)

First, you need a box or special tofu form to press the tofu in. I made my own out of a plastic box with some holes pinched, and the lid cut a bit smaller to fit inside the box with a weight on top. Line it with a cheese cloth or similar piece of loose-woven fabric, damp from being rinsed in cold water.Heat the soy milk up until about 80-90 degrees, hot, but not boiling. Use a thermometer if you have one. Switch off the heat and add your coagulant of choice, stir a couple of times and wait. You might have to add some more, but the less, the better.

I used apple cider vinegar because I couldn't get hold of nigari or gypsum. I added about 2 tbsp to 2 liters of soy milk.
When you see the whey and the solids separate into small curds, put the lid on the kettle and wait 10-15 minutes.
Take the lid off and check the state of things. If the curds are quite large and separated from the whey, you're all good. If they're small and still kinda integrated, add a bit more coagulant and put the lid back on. If you're happy, try to get most of the whey out before scooping the curds into your tofu form. Use a sieve and a large spoon.
Spoon the curds into your form lined with sieve cloth. Your final tofu block will be about half the size of the initial mixture. You might want to pour some in, wait for it to drain some, and then add more. When all is in, wrap the cloth over the top, put the lid on and weigh it down with a can or something else heavy. Place it in a bowl or in the sink so the liquid that comes out is collected. Leave for 20 min - 1 hour depending on how hard you like the tofu.
I drained mine for about 30-40 minutes.
Carefully slide your tofu out of the form and into a bowl of cold water. Remove the sieve cloth. Take the tofu out of the water and dry it with some kitchen paper. Enjoy!
It keeps 2-3 days in the fridge if you store it in a box with water.