Put the mince in a bowl and add the onion, pistachios, parsley, chilli and spices. Season well with salt and pepper and use your hands to mix everything together thoroughly.
Scoop up dessert spoonfuls of the mixture and form into small log shapes, squeezing the mixture to mould them. Flatten each side slightly on a board to give them a boxy shape.
Heat a griddle pan until hot. Brush a little olive oil over the koftas and fry in batches of 5 or 6 for about 2 minutes on each side. Cut through one to check there are no pink bits left in the mince and they’re ready.