Cream of primordial soup.

Primordial soup theory is an Abiogenetic theory; that boys and girls means it's a theory about how life began.

So get ready to follow me on a conveniently short journey back in time to well before life began but first we will take a short stop at year eleven history and the theory of spontaneous generation; the idea that microbes and other organisms associated with dirt just appeared in unclean materials.

Well this theory was quickly disproved by our favourite Frenchman Louis Pasteur.

Well in 1924 a clever bloke called Alexander Oparin said that spontaneous generation of life did in fact occur but not in the sense that it was once accepted.

Oparin reckoned that because of the oxygen-less atmosphere a 'primeval soup' of organic molecules could be synthesised through reactions caused by the action of sunlight.   

These organic molecules would 'grow' by fusing with other molecules and 'reproduce' by splitting into daughter droplets.  This formed the basis of basic metabolism.

Now this is a very old theory and isn't really widely accepted as there are other theory's that are better.

But this is my favourite theory SO SHUT UP!