Mix equal parts of honey and water in a small sauce pan. Stir over medium heat until honey is dissolved and completely blended with the water. You can store this in a sealed jar in the refrigerator for up to two weeks.
Cocktail
Place mint into a cocktail shaker and gently muddle. Add honey, lime and gin with a little ice and briefly shake. Strain into a rocks glass, over ice. Add grapefruit tonic to fill and garnish with a fresh mint sprig.