Preserve this tangy little citrus fruit in a cinnamon infused syrup.
Add the sugar and water to a saucepan and bring to the boil. Turn down the heat and cook gently for 5 minutes.
Add the cinnamon stick and halved kumquats and simmer for 10 minutes, making sure to coat the kumquats in the syrup.
Remove the kumquats with a slotted spoon and place in a jar. Continue to cook the syrup for a further 5 minutes to thicken slightly, then turn off the heat.
Allow to cool for a few minutes, remove the cinnamon stick, then pour the syrup over the kumquats and fill the jar, then put the lid on while the contents are still hot to help form a seal.
Once cooled you can store in the fridge until needed.