Bring water, sugar, and chopped ginger to a boil in a small saucepan.
Once boiling, lower heat and let mixture simmer for about 10-12 minutes, until syrup thickens.
Pour syrup into a heat-proof bowl or mason jar and place in fridge to cool completely before using.
Leave ginger in syrup for a more full-bodied flavor or remove to keep ginger flavor lighter.