This is a very trivial one, but it's bugging me and I'd love to know what you all think. Last night I cooked dinner that I'd invented off the top of my head (no recipe) for me, husband and daughter (23). I cooked a sauce comprising: prawns, salmon, garlic, ginger, lemon, 1 can chopped tomatoes, spring onions, lemon thyme and rosemary. Those were all the ingredients. Then I made some wild brown rice and mixed the whole lot up together. My daughter said it was delicious, then said, 'But we've had it before, though. It's not new.' I pointed out that it was new, although we'd had a similar looking dish before: risotto with risotto rice, prawns, salmon, fennel, a stock cube. No tomatoes, no lemon thyme, no ginger, no rosemary. When I tried to explain this, daughter got v cross and raised her voice and really berated me, as if I was being a ridiculous idiot for saying that this was a new dish we hadn't had before. But to my mind, it was a completely new meal even though it involved prawns, salmon and rice. Am I being unreasonable to think she was wrong and it's a different dish?