Take one small handful of oatmeal, add to one pint of boiling water and an a pinch of salt, stir whilst cooking, until cooked.
add either more water or less oatmeal.
Same recipe, except, do not either add salt or stir, serve cold.
Same recipe but add a vegetable peeling or two.
Recipe as above. but changing the name will enable you to offer greater variety during Lent.