HELP! I have been drinking twinnings tea for a while. But it has started tasting horrible! I know that twinnings have changed their recipe, but this is more recent than that. The first change was that the tea would get an oily scum on the top - what causes that? Now the smell is so horrible I can't hold the tea near my face. Mr Side thinks I am mad he can't tell the difference. I know I have issues when the milk is turning, but is this more likely to be the water? And is there anything that I can do? Mr Side makes me cups of tea 3 or four times a day and it is really upsetting him when I pour it straight down the sink.