It is a caffeine-free herbal infusion made from the dried flowers of the Clitoria ternatea plant, native to Southeast Asia. It brews a deep blue and is best known for changing colour to purple when you add lemon. The taste is clean, earthy and lightly sweet, with no bitterness.

It is naturally caffeine-free and, like many deeply coloured plants, contains antioxidant compounds called anthocyanins (the same pigments behind its blue colour).

Many people simply enjoy it as part of a calming daily ritual. We do not make specific health claims; for anything health-related, please see our Medical Information Disclaimer and speak to a healthcare professional

No. It is naturally caffeine-free, which makes it a good choice in the evening or any time you want a calming cup without the buzz.

The flowers are rich in anthocyanins, the natural pigments that give the tea its blue colour. They react to changes in pH, so adding something acidic like lemon or lime shifts the blue to purple and then pink, right in your cup.

Steep 1-2 teaspoons of flowers in freshly boiled water for 2-3 minutes. For iced tea, brew it double strength and pour over ice. Add a squeeze of lemon at the end for the colour change.

Unlike black tea or coffee, butterfly pea is unlikely to stain teeth. The blue may briefly tint your tongue, but it does not discolour enamel.

Most people enjoy it safely in normal amounts. As with any herbal tea, if you are pregnant, breastfeeding or taking medication, it is sensible to check with your doctor first.

Absolutely, it is one of its best tricks. A strong brew works as a natural blue or purple food colouring for rice, baking, icing and cocktails. See our Vegan Blue Cheesecake and Blue Glaze Donuts recipes.