Crush coriander seeds in a mortar. Wash the lime thoroughly and finely grate the peel. Halve the lime and squeeze the juice. Wash coriander, dab dry and chop 2 stems finely.
Mix yoghurt, crushed coriander, coriander green and lime zest with juice. Season with salt and pepper. Clean, wash and cut the zucchini into longish slices. Peel garlic and cut into slices.
Heat oil in a pan and fry garlic in it. Add zucchini in portions and fry for 2-4 minutes, turning. Arrange on plates. Pour yoghurt sauce over the lukewarm zucchini slices.
Serve garnished with coriander green and lime slices.