Peel and chop the ginger. Place all of the ingredients into a medium sauce pan and bring to a boil for 5 minutes, then reduce to a simmer on low heat for 1 hour.
Strain the syrup (discard the ginger) into a bowl with a spout. Add in 1 teaspoon fresh lemon juice.
Using a funnel, pour syrup into medium sized glass jars. Tie or stick a label on it and enjoy!