Ingredients

• one large cupful oatmeal
• one quart cold water
• half a cupful buttermilk
• one pint cold water
• a little sugar and ginger

Method

• Leave the oatmeal to steep in the quart of cold water and buttermilk for two nights until soured.
• Then pour off the surface water and pour two tablespoonfuls of the mixture through a fine sieve.
• Add to it the pint of cold water, flavour with a little sugar and ginger, and boil for about ten minutes.
• It should be as thin as milk after boiling.
• The remainder of the mixture may be kept fresh for a few days by draining the surface water and replacing it with fresh water.

Mynytho, Caernarfonshire.