Pod the peas. Do not discard the pods, but instead string and chop them into small pieces, then boil for 20 minutes in the broth. Sieve, and discard the pods, but admire the strong pea flavour of the liquid.
Take a heavy casserole or pan and melt the butter over a medium heat. Add the onion and pancetta and sweat for 5 minutes. Add the peas and sweat for a further 5 minutes. Add all the