Brew your green tea using one tea bag in 1 cup of hot water, steeping for 2-3 minutes until the water turns a light golden-green color. Remove the tea bag and allow the tea to cool completely to room temperature, or refrigerate for 10 minutes to speed up the process.
Fill a tall 16-ounce glass with ice cubes until it reaches about three-quarters full. The ice should be packed enough to keep your drink cold but leave room for all the liquid ingredients.
Pour the cooled green tea over the ice, listening for the satisfying crackling sound as the tea meets the cold ice. The tea should fill about half the glass at this point.
Add the peach syrup directly into the glass, watching as it creates beautiful swirls through the green tea. The syrup will initially sink to the bottom, creating layers of color from pale green to peachy amber.
Pour the lemonade over the tea and syrup mixture, filling the glass to about one inch from the top. The lemonade adds a tart brightness that balances the sweetness of the peach syrup perfectly.
Using a long spoon, stir the drink vigorously from bottom to top for about 15 seconds until all ingredients are fully combined and the color is uniform throughout. You should see the drink transform into a beautiful peachy-green hue.
Taste your drink and adjust sweetness if needed by adding more peach syrup one teaspoon at a time, stirring well after each addition. The flavor should be fruity and refreshing with a subtle tea undertone.
Garnish with a fresh peach slice on the rim of the glass if desired, and serve immediately with a straw. The drink is best enjoyed right away while the ice is still intact and the flavors are perfectly balanced.
