What constitutes "a bunch" of parsley or mint? How much does a bunch weigh?
Nigella often gives specific directions for quantities of herbs (such as chopped tablespoonfuls) where it will affect the taste of the dish, but some recipes, such as Duck Breasts With Pomegranate And Mint, use larger quantities of herbs and the ingredients may call for a bunch of herbs.
The bunches are based on the packages sold in UK supermarkets and these are usually around 30g in weight for mint, basil, parsley and coriander (cilantro), including the stalks. We would consider this a medium to small size of bunch and this size of bunch usually yields approximately 1 cup (loosely packed) of picked leaves.