I've been trying to recreate a fruit tart I had a little while ago when I was off on vacation. It was a fruit tart with a chocolate shell, assorted fruit on top, strawberries, blue berries some had raspberries. It was slightly sour to the taste with equal amount of sweetness. So far I've made them with different recipes of pastry creams and hoping the berries themselves gave the sourness but haven't really got what I was looking for. No real balance its mostly sweet and creamy. Im looking for a good bite of tartness with it. Anyone have any ideas as to what recipe I am looking for? If it helps where i got it was down in Disney world at one of the little food courts they have. They were little personal tarts. Also how long can you hold a tart for or if you were gonna sell them? I see bakeries and some restaurants have them but being something that seems delicate i cant see them being make so far in advance.