Combine chopped mint, ginger, and honey in medium bowl.
Add boiling water. Let steep 30 minutes.
Strain into 4-cup glass measuring cup, pressing on solids to extract liquid. Add lemon juice and enough cold water to measure 4 cups total.
Pour into a pitcher, cover and refrigerate. This can be made a day in advance. Keep in refrigerator until ready to serve.
When ready to serve, fill glasses with ice cubes. Add lemonade. Garnish with mint leaves and lemon slices. Take a sip and enjoy the flavor and the health benefits!