2. Pour water, honey and millet sugar into the pot, cook for a while and then let it cool.
3. Put 1 and mint in a storage tank and refrigerate overnight.
4. Make mint syrup, mix sugar, water and mint leaves in a pot, heat until boiling, and simmer for 2 minutes. Take out the pan and let it cool for a while.
5. Add ice cubes to the glass, add 30g mint syrup, and pour in about 200g soda water.
6. Decorate the edges with mint leaves or lime blocks.