master-cooks | What Makes Butterfly Pea Flower Tea Change Color?

Butterfly pea flower tea is known for its striking ability to change color, a phenomenon primarily attributed to its rich content of anthocyanins, which are water-soluble pigments responsible for the vibrant blue color of the petals. These pigments are highly sensitive to pH changes, which is the key to the tea's color transformation. When the tea is brewed in its natural state, it presents a deep blue hue. However, when an acidic substance such as lemon juice is added, the pH level of the tea decreases, causing the anthocyanins to undergo a structural change. This alteration shifts the color of the tea from blue to a captivating purple or even pink, depending on the acidity level. The interaction between anthocyanins and pH is a reversible chemical reaction, allowing the color to change back if the acidity is neutralized. This characteristic not only makes butterfly pea flower tea popular for its aesthetic appeal in cocktails and culinary dishes but also highlights the fascinating interplay between natural plant compounds and chemistry. The tea's ability to change color serves as a vivid demonstration of the dynamic properties of anthocyanins and offers an engaging experience for those who enjoy both its visual and sensory qualities.

How is butterfly pea flower tea used?

The vibrant hue of butterfly pea flower tea is undoubtedly its standout feature, but the flavor deserves attention as well. While the eye-catching blue shade may evoke thoughts of blue raspberry candy and the sweet notes of Blue Curaçao, the tea itself offers a much different experience. Its taste is quite mild, with earthy and grassy undertones, and a hint of green tea flavor, all without any caffeine.

Before butterfly pea flower tea gained popularity as a trendy drink in the West, it was already a staple in Southeast Asian cuisine. In Thailand, it is commonly enjoyed as a sweetened tea with a splash of citrus, often enhanced with lemongrass. Additionally, it is frequently used to impart a blue tint to light-colored dishes such as cakes, dumplings, and rice, particularly in countries like Malaysia and Singapore.

The rise of butterfly pea flower tea was so significant that even Starbucks took notice, introducing a butterfly pea lemonade cold brew in Southeast Asia in 2018. Today, this flower has become a global sensation, embraced by bartenders, chefs, and baristas around the world. Mixologists utilize the flower to create visually stunning cocktails that change color, typically combining it with fresh ingredients like lemon, tonic, lime, mint, and gin. Coffee shops serve the tea on its own or incorporate it to add a vibrant purple hue to lattes and lemonades.

What Makes Butterfly Pea Flower Tea Change Color?

How is butterfly pea flower tea used?

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