Combine 1 cup of water and 1 cup of sugar in a saucepan. Heat and stir until the sugar has completely dissolved.

Allow the syrup to cool slightly, then add your chosen flavour concentrate. For 750 mL, start with 3.75 mL (0.5%) for mild, 7.5 mL (1%) for medium or 11.25 mL (1.5%) for full flavour. Adjust to taste.

Stir until the flavour is evenly incorporated, then transfer to a clean, sterile bottle. Add 1–2 tbsp to coffee, tea or other drinks.