Heat grill to high. Put the lentils into the
bowl of a food processor, then whizz to a
rough paste. Tip into a bowl, add the mince,
coriander and plenty of seasoning, then mix
well. Roll into 16 balls, thread onto 4 skewers,
then grill for 10 mins, turning halfway through,
until golden and juicy in the middle.
Meanwhile, mix the cucumber and fennel
with the yogurt, garlic if using, chilli and salt
and pepper to taste. Serve with the kebabs.