For the marinade, combine the mint, yogurt, garlic
and pepper. Put the chops into a non-porous dish
and rub allover with the lemon juice.
Pour the marinade over the chops, cover and marinate for 2 to 3 hours.
To make the tabbouleh, put the couscous
into a heatproof bowl and pour the boiling water
over it. Leave for 5 minutes. Drain and put into a
sieve. Steam over a pan of barely simmering water
for 8 minutes. Toss in the oil and lemon juice. Add
the onion, tomatoes and herbs. Season and set aside.
Cook the lamb over a medium hot barbecue
for 15 minutes, turning once. Serve with the tabbouleh.