The Science Behind Our Colour-Changing Blue Moon Tea!

The Science Behind Our Colour-Changing Blue Moon Tea!

Blue Moon tea, also known as butterfly pea flower tea, has become a popular trend in the world of food and drink. This unique tea, made from the flowers of the butterfly pea plant, is native to Southeast Asia and has been used for centuries in Ayurvedic medicine and as a natural food colouring. What makes this tea so special is its ability to change colour depending on the pH levels of the ingredients it is mixed with. In this article, we will explore the science behind blue moon tea and how it changes colour, as well as how to brew it.

What is Blue Moon Tea?

Blue moon tea is an herbal tea made from the flowers of the butterfly pea plant, also known as Clitoria ternatea. Originating in Southeast Asia, this plant has been widely utilized in Ayurvedic medicine for its numerous health benefits. The plant produces bright blue flowers that are used to make blue moon tea. When brewed in hot water, the flowers produce a bright blue liquid that is visually stunning. However, the most unique feature of this plant is its ability to change colour.

How Does Blue Moon Tea Change Color?

Blue Moon tea changes colour due to the presence of anthocyanins, which are water-soluble pigments that are sensitive to changes in pH levels. When the pH levels change, the anthocyanins in the tea undergo a chemical reaction that alters their structure and changes the colour of the tea. For example, blue moon tea undergoes a remarkable transformation after adding acidic lemon juice, turning from its original blue colour to a vibrant shade of purple. Similarly, when hibiscus leaves or syrup are added, the tea turns red.

Brewing Blue Moon Tea

The traditional brewing methods of blue moon tea hail from Thailand and Malaysia. In Thai culture, this tea is commonly referred to as nam dok anchan and is prepared by blending it with honey, lemon, ginger, and mint for a delightful burst of flavor. In India, new and unique infusions are emerging, and the tea is often paired with foods to play up its vibrant colour characteristics.
Brewing blue moon tea is a straightforward process. Start by adding one tablespoon of dried blue moon tea petals to 1 cup of hot water, and steep the petals for 5  mins until the tea turns a bright blue color. To enhance the flavor and visual appeal of the tea, consider adding a splash of lemon juice, which will transform the blue hue into a rich shade of purple. For those who prefer a pinkish tint, you can achieve this by incorporating a teaspoon of hibiscus petals into the hot water along with the blue tea petals. Once you have achieved your desired hue, strain the leaves and pour the tea into a mug. Enjoy the refreshing taste and unique appearance of this vibrant beverage.

The Flavors of Blue Moon Tea

Blue Moon tea has a mild flavor that is often described as earthy, with hints of lavender and  green tea. It is a popular choice for those who are new to drinking tea, as it is not overpowering and can be enjoyed hot or cold. When paired with other ingredients, the flavor of blue moon tea can be enhanced, creating a unique taste experience. For example, adding honey, lemon, ginger, and mint to blue tea can create a refreshing and soothing drink.

Health Benefits of Blue Moon Tea

Blue moon tea is not only a visually stunning drink but also one that offers numerous health benefits. This herbal tea is rich in antioxidants, flavonoids, and anti-inflammatory properties, making it a great addition to any diet.
Free radicals are harmful compounds that can cause damage to the body. Antioxidants are beneficial substances that help protect against this damage by neutralizing free radicals. These free radicals can lead to chronic illnesses like cancer, heart disease, and other health problems. Blue moon tea contains high levels of antioxidants, making it an excellent choice for those looking to boost their overall health.
Flavonoids are another group of compounds found in blue moon tea that have been shown to offer health benefits. These compounds reduce the risk of heart disease, stroke, and cancer. They work by improving blood flow and reducing inflammation throughout the body.
Blue moon tea also has anti-inflammatory properties. Many health issues such as heart disease, diabetes, and cancer are often caused by chronic inflammation. By reducing inflammation, blue moon tea may help to prevent these and other chronic diseases.
In addition to these health benefits, blue moon tea is also a natural source of caffeine, making it a great alternative to coffee. Unlike coffee, however, blue moon tea is less likely to cause jitters or sleep disturbances.
Overall, blue moon tea is a delicious and healthy beverage that can provide numerous benefits to the body. Whether you are looking to boost your overall health, reduce your risk of chronic disease, or simply enjoy a delicious cup of tea, blue moon tea is a great choice. So, the next time you are looking for a healthy and refreshing drink, consider trying blue moon tea.
Blue moon Tea Blue tea


Blue moon tea, originating from Asia, adds an exciting twist to the tea brewing experience. Blue moon tea's mild flavor and colour-changing properties make it an excellent choice for both novice and experienced tea drinkers alike. The captivating colour properties of blue moon tea add an aesthetically pleasing element to the brewing process, making it an ideal choice for social events and gatherings with friends.
Enjoy the pretty hue of blue moon tea as-is or add an element like hibiscus tea petals or lemon slices to turn the colour.  However you decide to enjoy this tea, we're sure you will love the vibrant vibes these petals add to your tea repertoire.
Want to brew colour-changing tea today? Check out our Butterfly Pea Flower AKA Blue Moon Tea by Lluvia Tea for a strikingly beautiful tea and a perfect party trick!