in a small sauce pan, dissolve the sugar and the water over medium heat. Using a vegetable peeler, peel the orange, trying to get just the outer skin and not the pith. Add the peel to the pan, and continue to cook for about 5-8 minutes. Remove from heat and let sit for 15 minutes before straining.
Store in an airtight jar or squeeze bottle. Best is used within a week.
Recipe by the modern barista at https://themodernbarista.com/index.php/2017/07/29/cold-fashioned/