Take off the outer skin off the fennel, cut into slices and then finely chop. Top and tail the pepper, remove and discard the pith and cut into fine dice. Top and tail the spring onions, remove the outer skin, cut into half lengthwise and cut into small dice.
Picture . Soften, but still leave crunchy the vegetables in a couple of tablespoonfuls of olive oil
Picture , lightly season with salt and black pepper. Put water on to boil for the spaghetti.