Put the mixture in a sieve or colander lined with cheesecloth. I used extra-fine cheesecloth
and doubled it, placed over a bowl to catch any water. Then put a weight on top to help push out water. I use a jar filled with water as James suggests, with one addition: I then place the jar atop a flat-bottomed plastic bowl with a diameter just slightly smaller than that of the sieve. The bowl helps to distribute the weight for more even pressing. Don't worry if that much water doesn't drip out, as the cheesecloth itself will absorb some of the water.