According to multiple sources, including a Newsweek article that went viral after a Panera employee shared the details on TikTok, Panera uses a commercial-grade concentrate from Republic of Tea that is specifically formulated for the restaurant and not available to the public.
The concentrate is made with their Passionfruit Papaya Green Tea as a base, but it is combined with other ingredients to achieve that signature neon-green color and crystal-clear appearance. Real brewed tea is naturally murky and golden-green because it contains tannins and plant compounds, which is actually a good sign that you’re getting real tea and real antioxidants.

The closest retail match I’ve found after multiple tests is the Republic of Tea Passionfruit Papaya Green Tea sold on Amazon. It nails the tropical flavor profile and you can buy it in bulk to keep your pitcher going all summer long.

Panera’s iced green tea is made from a commercial Republic of Tea concentrate. It contains green tea, natural flavoring, and cane sugar simple syrup. The neon-green color comes from the concentrate, not natural tea. A homemade version using real tea bags will be golden-green and contains more natural antioxidants.

Here’s the thing about Panera’s iced green tea that surprised me when I researched it: the restaurant version is made from a concentrate, not freshly brewed tea. That’s how they achieve such consistent color and flavor at scale across thousands of locations.

The concentrate gives the tea its characteristic neon-green, crystal-clear appearance )similar in color to Mountain Dew) which is a little alarming when you think about it. Real green tea brewed at home will be a warm golden-green and slightly murky. That’s not a flaw; that’s real tea behaving the way real tea behaves.

The homemade version is genuinely more nutritious. Green tea contains catechins, which are powerful antioxidants linked to improved metabolism, heart health, and cognitive function. You get all of those in the homemade version, along with control over exactly how much sugar goes in your glass.

Yes. Replace the simple syrup with monkfruit sweetener to taste after brewing. The recipe works identically — just add monkfruit in small amounts since it is significantly sweeter than sugar. The sugar-free version contains approximately 5 calories per serving.

Panera’s unsweetened iced green tea contains approximately 0 calories. The standard sweetened version adds roughly 100-120 calories depending on the size ordered. This homemade version with 3 tablespoons of sugar contains approximately 45 calories per serving (about 12 calories per tablespoon of sugar divided across 4 servings). The monkfruit version is approximately 5 calories per serving.

Yes. A large Panera iced green tea contains approximately 70-100mg of caffeine, depending on the size and steep concentration. Green tea naturally contains less caffeine than black tea or coffee. This homemade recipe, steeped for 3 minutes, produces a similar caffeine level per glass.

Panera uses a cane sugar simple syrup to sweeten their iced green tea. The unsweetened version contains no added sweetener. For the homemade version, you can use white sugar simple syrup (as written), honey, monkfruit sweetener, or passionfruit simple syrup for extra tropical flavor.

Properly stored in a sealed glass pitcher in the refrigerator, homemade iced green tea stays fresh and flavorful for 3 to 5 days. Store the fresh mint separately and add it to individual glasses when serving — mint stored in the pitcher will turn slimy after about 24 hours.

This is completely normal. Panera’s tea is made from a commercial concentrate that is filtered and processed for clarity. Real brewed green tea contains tannins and plant compounds that make it naturally golden-green and slightly murky. The murky appearance means you’re drinking real tea with real antioxidants — it’s a feature, not a flaw.

Yes. While Passionfruit Papaya Green Tea is the closest match to Panera’s signature flavor, Republic of Tea makes several tropical green tea varieties that work beautifully in this recipe. Their Mango Ceylon or Tropical Green teas produce a similar tropical sweetness. Regular green tea bags can also be used for a more traditional, less tropical iced green tea.

Boiling water (212°F) scorches the delicate compounds in green tea leaves, producing a bitter, astringent taste. Green tea is best brewed at 160-180°F — just before the water reaches a full boil. Removing the water from heat at the right moment is the single biggest factor in whether your green tea tastes smooth or bitter.

Yes. If you don’t have the Republic of Tea Passionfruit Papaya bags, use 5-6 standard green tea bags and add a splash of passionfruit simple syrup or a tablespoon of passionfruit preserves to approximate the tropical flavor. It won’t be identical to the Panera version but it will still be a delicious, refreshing homemade iced green tea.

Green tea is one of the most studied beverages for health benefits. It contains catechins — antioxidants linked to improved metabolism, cardiovascular health, and cognitive function. The homemade version of this recipe, made with real brewed tea bags, delivers these benefits. Panera’s concentrate-based version may contain added sugars and artificial coloring that reduce its nutritional value compared to freshly brewed tea.

Simple syrup is just equal parts sugar and hot water, stirred until dissolved. For this recipe: add 3 tablespoons of white sugar to 1 cup of hot water and stir for about 60 seconds until fully dissolved. That’s it. The syrup blends into cold drinks far better than granulated sugar, which just sinks to the bottom.

Absolutely. Double or triple all ingredients using the same proportions. For a party of 10, brew with 6 cups of water and 2 quart-sized tea bags. Make a double batch of simple syrup. Add enough cold water to fill a large 2-quart pitcher. Garnish with a full bunch of fresh mint and sliced citrus for a stunning self-serve drink station presentation.