This really delicious fresh herb tart is a modern attempt at recapturing the sumptuous mix of herbs that characterised the gardens of the fourteenth and fifteenth centuries. In those days, the herb garden was often the only garden, and many plants, flowers and 'weeds' were primarily classified as herbs because of their many uses. Although the mix of herbs here is a modern one, the opportunity is there to use any combination. Dill would be an interesting alternative. It is one of the oldest herbs and was used by magicians in casting their spells. Parsley is used in both the pastry and filling and you can use the flat-leafed variety if that is easier to find. Try to use only fresh herbs but dried herbs can be used as a last resort. Perhaps more than any other tart, this one illustrates how herbs can very gently release their unique aromas into the cooking.