Ginger-Bay Syrup

In a food processor, chop the ginger and sugar; transfer to a saucepan. Add 2 cups of water and bring to boil, stirring to dissolve the sugar. Add the bay leaf and simmer over moderate heat until slightly thickened and reduced to about 2 1/2 cups, 20 minutes. Add the lemon juice and simmer for 1 minute. Let cool, then strain into a small pitcher, pressing on the solids. Pour the syrup into small bottles and add the candied ginger.