(courtesy of Michael C. Moberly, bartender and spirits educator in Reno. Makes 18 ounces of tonic)
1 cup strawberries, quartered
½ cup mint leaves
2 cups water
Peel from 1 lemon
1 ounce lemon juice
1 cup sugar
1 teaspoon citric acid
Boil water. Stir in all ingredients except sugar and citric acid. Let simmer 10 minutes. Stir in sugar until dissolved. Let simmer another 10 minutes. Let cool, then strain. Once strained, strain again through a coffee filter or cheesecloth. Add citric acid to remaining liquid. Keep in the refrigerator for up to 30 days.