Peel the ginger and dice very finely. Peel garlic and press it through the garlic press. Mix both with yoghurt and spice mixture. Season with ground coriander and sugar. Wash the chicken filet, dab dry and cut into cubes.
Skewer on the sharpened lemon grass. Pour the marinade over the skewers. Leave in the fridge for 2-3 hours. Put rice into boiling salted water. Leave to swell on low heat for about 20 minutes.
In the meantime, place the skewers on an oiled baking tray, salt lightly. Cook in the preheated oven (electric cooker: 175 °C/ gas: level 2) for about 10 minutes. Serve the skewers and rice garnished with plenty of lime and fresh coriander.