Heat the oil in a sauce pan. Add the onions and stirring frequently, fry for about 10 minutes to a deep golden color
Put the onions in a blender or food processor with all the other ingredients except mince and blend to paste.
Put the mince and the paste in a bowl. Knead the mixture really well for a few minutes with your hands until the mince hold its shape and is soft and pliable.
Break off large pieces of the mince and shape them into tennis ball sized balls. Insert the skewers in the centre of each ball, then carefully wrap each ball with thread. Brush the kababs with oil. Put skewers carefully over a gentle charcoal flame. Cook for 5 minutes until pale brown on each side.
Remove from skewers and serve at once.