Here is the saffron threads.

Use a mortar and pestle to grind the saffron threads into powder.

and here is your powdered saffron.

Place 1/2 teaspoon powdered saffron in a cup, pour 4 tablespoons of boiling water over saffron and stir.

Cover the cup and let it soak for 1 hour.

Now it is ready to use.