The Quack Doctor's blog has a post all about an old-time invalid food called Valentine's Meat Juice. However, eating was apparently not the only thing it was used for:
An enema described in The Philadelphia Medical Journal in 1900 comprised one egg, one tablespoon of Valentine’s Meat-Juice, 4oz sterilised milk, ½oz. brandy, ½ tsp. salt, and 5oz of sterilised water. Two ounces of this mixture was to be administered every two hours ‘as high up in the large bowel as possible.’
The benefits to be had from this process are unclear.