Rhyme/song Little Miss MuffetSat on a tuffet, Eating her curds and whey; Along came a spider.Who sat down beside her And frightened Miss Muffet away. Story - Diddle, Diddle, Dumpling my son John ...

The puddle is actually whey (as in, whey of Little Miss Muffet fame). Dr. Rajan explains that when making yoghurt, you have to separate the more solid curds in milk from its runnier whey.