Bring coconut water to high heat in a small stove-top pot.
Peel and finely grate fresh ginger. Add to hot coconut water. Let boil for 5 minutes, then bring to a simmer for 20 minutes.
Strain into a mason jar using a fine mesh strainer.
Add sweetener to mason jar while still hot, mix.
Let cool, then store in the fridge.
Once ginger liquid is chillled, shake jar then pour 4oz into a glass.
Squeeze 1/2 a lemon or lime into glass and add sparkling water.
Spicy Mock-scow Mule
Add a teaspoon of chopped chilli and a teaspoon of coconut sugar to a saucepan. Add enough water to cover. Let simmer over gentle heat for 10 minutes. Leave to cool. Strain and pour into heatproof jar.
Fill a glass mug or similarly sized glass with ice. Pour in the syrup and lime juice. Fill the glass with ginger ale and gently swirl it with a spoon once to mix.