Put mincemeat, orange rind and juice made up to 1/4 pint with water into a small pan. Bring to the boil, reduce heat and simmer for 5 minutes.
Dissolve cornflour with water and add to pan with liquor of choice and brown sugar. Bring to the boil, stirring, and cook for one minute. Allow to become cold.
Melt the butter in a pan and stir in the demerara sugar then the oats. Stir until well coated. Allow to become cold.
Place half the oat mixture in a glass dish then spread over the mincemeat mixture. Finish off with the oats.
Whip the cream with the liquor until thick. Spread half over the oats. Whip the rest until stiff and pipe around the edge. Decorate with nuts and cherries.