Yes you can. I find the Ceylon cinnamon adds a delicate sweet flavour which eliminates the need for any additional sweetness. However, if you wish to make the tea sweeter, there are 3 different options you could use which are refined sugar free:- - Raw manuka honey (UK Link/US Link), which has antibacterial, antiviral and antifungal properties.  - Sweet freedom syrup (UK Link/US Link). For a vegan and plant based sweetener, sweet freedom syrup is a great option. It’s a natural sweetener made from fruit extracts, with a low glycemic index.  - Medjool date (UK Link/US Link) for a whole food plant based sweetener. After making the tea, place the strained drink in a blender with the date and blend on high until fully combined.