Place all the ingredients in a large pot and cover with water.

Bring it all to the boil.

Once boiling immediately reduce to a simmer.

Simmer for 1 hour.

Occasionally skim the foam off that accumulates on top and discard.

Strain the stock.

Discard the solids.

Strain the stock through a fine strainer to remove any fine solid particles.

The stock is now ready to use as required.

Or it can be portioned and frozen for later use (up to 2 months)

Or it can be kept in the refrigerator for 2 days.