Wash and dry the oranges before carefully peeling all of the rind off with a vegetable peeler. Using a sharp knife, remove as much of the white pith from the strips as possible and cut into very thin strips [see photos]
Using your hands, peel the oranges further, removing as much of the white pith as possible [see notes]
Cut each orange into four horizontal slices and reshape, holding the segments together by poking a small wooden skewers in the centre of each. Place into the serving dishes and set aside while you make the syrup [see photos and notes]
Place the thinly sliced orange strips into a small saucepan and cover with some water. Bring to the boil over a medium heat and cook for 10 minutes before draining.
Combine the sugar and 225ml of fresh water in the same pan and stir over a medium heat until the sugar dissolves. Add the cooked orange strips and continue to boil for around 10 minutes or until the orange strips are transparent and glossy.
Take off the heat and separate the strips from the glaze, placing them onto a lightly oiled plate to cool.
Return the glaze to the heat and boil uncovered for a further 5-10 minutes or until the syrup has thickened slightly [see notes]
Remove from the heat and allow to cool slightly before stirring in the lemon juice and Cointreau. Allow to cool for a further 5 minutes.
Pour enough of the cooled syrup over to coat the oranges and top with some of the glazed orange strips. Cover with cling film and refrigerate for at least a few hours but preferably overnight. Store the extra syrup and the leftover orange strips separately in the fridge.
Before serving, remove the wooden skewers from the oranges and top with extra syrup and orange strips. Enjoy!