My SiL makes the most wonderful moussaka. She buys the very best ingredients and takes over the kitchen and most of the morning room preparing it. The most fiddly bit is slicing the aubergines and sprinkling them with salt, then when they have sweated all the bad stuff out slowly frying them. As she makes huge amounts of the stuff, lots gets frozen for later. The finest lamb is minced, the freshest usually organic vegetables are used, the sauces are to die for. You get the picture. Usually she and her mother try out a portion each, the day before the Dinner Party or whatever it is being made for. This one time sister-in-law was tucking into her portion and MiL took one mouthful and spat it out, saying it tasted so bitter and just wrong. She queried what SiL had used and the answer was, same as always. MiL said the aubergines were plain nasty, had she not salted them? Yes came the answer I used the salt from under the sink. What salt? asked MiL. The salt was fetched from under the sink. It was Harpic! SiL suffered no ill effects from eating her portion btw 