Wash the mussels under fresh water and with a knife scrape from the shells any material attached and any beards.
Put the mussels in a deep pot and at the same time add all the ingredients.
Cut the lemon in half, squeeze all the juice into the pot and add the lemon peels to the pot as well.
Cover the pot and cook under medium to high heat.
Occasionally stir the pot to ensure that the mussels cook evenly. Cook for about 15 mins.
Remove to cover and cook for an additional 5 minutes.
The mussels are done once they have all opened.
Any mussels that do not open, discard them as they are not edible.