Pour the yogurt into a bowl. Add the honey and vanilla paste or seeds and stir together. Add the cinnamon and cardamom. If you like, soak a few threads of saffron in a little hot water or milk, strain and add to the yogurt mixture. Roughly chop the pistachios.
Place yogurt in bowls, making a small depression for another teaspoon of honey. Sprinkle pistachios over each bowl and sprinkle with a little more cinnamon for color.