Put the aubergine and garlic on the BBQ and cook them until soft inside, turning them from time to time..
Scrape out the aubergine flesh into a bowl. Squeeze the flesh of about 4-6 garlic cloves into the bowl (use the rest for other recipes).
Cut the courgette into long, thin slices, then brush or spray them with olive oil. Barbecue or grill them for a couple minutes until lightly charred.
Put the aubergine, garlic flesh and courgette into a food processor. Add the remining ingredients and whiz until you get a textured cream.
Taste and adjust the seasoning, spices, lemon juice to your liking.