I always thought jam-making was akin to alchemy, secrets known only to silver-haired members of the Women's Institute.
But... shhh! don't tell anyone... it's dead easy to be this form of domestic goddess. All it requires is a 4-year old having fun at a fruit farm, followed by a big pan. I'm sure if I was serious about it I'd have stirred it more often and used a thermometer and all carefully balanced flavours but the ramdom throwing everything in tastes yummy.