For a less intense thyme flavour, omit thyme from the sugar syrup and add it to the lemon juice instead. Make sure you crunch the leaves in your hand to release their flavor. Add gin for an alcoholic twist.
1/2cup white sugar
1teaspoon vanilla extract
1small bunch thyme, plus some for garnish
1cup fresh lemon juice
1cup sparkling or still water, divided
Combine the sugar, water, vanilla, honey, and thyme into a pot and stir over a medium heat until the sugar dissolves. Strain to remove thyme and allow to cool.
Stir in lemon juice. Pour the syrup and lemon mixture into a glass with ice and top with 1/4 cup soda water. Garnish with a sprig of thyme. Repeat for each glass.