Cut the zucchini into 5 mm thick slices, season with salt and leave to soak in water on kitchen paper for about 30 minutes on each side, pat dry.
Brush a thin layer of olive oil on both sides, grill on a baking sheet at 200 ° C (top heat) for about 30 minutes on both sides, the slices should be light brown. Add the garlic cloves to the oven until tender.
In the meantime, prepare a pesto verde: coarsely chop the herbs, grind with the salt in a mortar, add the pine nuts and chop. Mix with the rapeseed oil and parmesan, pepper well.
Squeeze the garlic out of the shell, puree with the zucchini slices until a creamy mixture is obtained, let cool down a little, then mix with the pesto, please do not puree any more.
Fill into glasses, add some oil if necessary, keep in the refrigerator for a few days. 1.5 kg of zucchini becomes approx. 800 g, approx. 3 smaller glasses full.