The iced tea changes daily at Three Tarts in Chelsea, but it's always a light, season-appropriate flavor based on Harney & Sons tea.
On a recent visit, the flavor of the day was a fruity black currant, and instead of sweetening it with sugar, the girl behind the counter offered a splash of limeade or lemonade. Now, as you may remember, both these citrus drinks are freshly squeezed, the lemonade sweetened with honey and the limeade with agave nectar. They're puckeringly fresh tasting and only a bit sweet. Blend one (or both!) with the iced tea, and you'll have concocted a wonderful makeshift Arnold Palmer. The proportions of tea to lemonade or limeade are entirely up to you.