Boil the kettle with fresh tap or mineral water and leave to settle for 30 seconds after boiling.
Spoon the mint leaves and caster sugar into a tall glass or mug and add the teabag. Gently fill up the glass or mug with boiling water and stir several times to mix together. Allow the mixture to settle for 30 seconds before drinking. Relax and enjoy an authentic (non-authentic) Moroccan mint tea which tastes just like it does in the Souk of Marrakech.
You can place the mint in a tea egg if you would prefer not to have the loose leaves in your glass.