Cook ginger and water together in a saucepan over medium heat. Bring to a simmer for 10 minutes for a milder syrup. Cook for 15 minutes for stronger ginger flavor. Remove from heat.
While mixture is warm, strain out ginger pieces. Stir in honey. Let cool completely.
Store in an airtight, food-safe container such a mason jar.
Penicillin cocktail
To a cocktail shaker filled with ice, add the blended Scotch, lemon juice and honey-ginger syrup.
Strain into a rocks glass over a large piece of ice.
Top with a float of Islay single malt Scotch whisky.
Garnish with candied ginger and a piece of lemon on a cocktail pick, if desired.
Notes
Adjust the sweetness or acidity to suit your tastes.
For a more robust ginger flavor in the syrup, add the honey to the ginger-water mixture and leave the ginger pieces in the jar overnight.
Experiment with different brands of Scotch until you find your favorite.