Color-Changing Blue Butterfly Pea & Gond Katira Cooler | Hot & Iced Caffeine-Free Tea

This butterfly pea tea with gond katira is the kind of colour-changing drink that makes people stop and ask what is in your glass. Dried butterfly pea flowers brew into a deep, natural blue, and a squeeze of lemon turns it violet-purple right in front of you. Gond katira, a traditional South Asian plant gum, adds a soft, silky body and a refreshing feel. You can serve it two ways: iced with coconut water on a warm summer afternoon, or as a gentle, caffeine-free hot tea on a chilly evening. There is no artificial colour and no refined sugar unless you choose to add a little.Serves: 1 (easily doubled)Prep time: 5 minutes, plus 2–3 hours to soak the gond katiraBrew time: 2–4 minutesDiet: naturally caffeine-free, gluten-free and dairy-free. Use maple syrup instead of honey to keep it veganWhat Is Gond Katira?Gond katira (also called tragacanth gum) is a natural, edible gum that comes from the sap of the Astragalus plant. It is sold as small, hard, whitish crystals. When soaked in water, it swells dramatically into a clear, tasteless jelly. In South Asian homes it is a much-loved summer ingredient, stirred into sherbets and milk drinks because of its cooling, refreshing feel. In the UK you will find it at Asian grocers and online; in the US, look in Indian or Middle Eastern stores or search online for “tragacanth gum” or “gond katira”.IngredientsFor the Gond Katira Jelly (Make This First)1 tsp gond katira crystals1 cup (240ml) waterFor the Drink8–10 dried blue butterfly pea flowers2 tbsp soaked gond katira jelly1 cup (240ml) coconut water, chilled (cold version only)1 cup (240ml) hot water (hot version only)½ tsp fresh lemon juiceHoney, maple syrup or brown sugar, optionalIce cubes, fresh mint and a few small pieces of fresh coconut, to serve (cold version)MethodStep 1: Soak the Gond KatiraPlace 1 tsp gond katira in a bowl with 1 cup (240ml) water.Leave it to soak for 2–3 hours, or overnight in the fridge. It will swell into a soft, see-through jelly.Stir it, and pick out any small dark bits or grit. Use only the fully swollen jelly in your drink.Option 1: Cold Galaxy Cooler (Best for Summer)Brew the tea: Bring ½ cup (120ml) water to the boil, add the butterfly pea flowers and leave to steep for 4 minutes. Strain and allow to cool slightly.Build the glass: Fill a tall glass with ice. Add 2 tbsp gond katira jelly, then pour in 1 cup (240ml) chilled coconut water.Layer the blue: Slowly pour the blue tea over the back of a spoon so it floats on top for a two-tone look.Sweeten if you like: Coconut water is already lightly sweet, so taste first. Add a little honey or maple syrup only if needed.Watch it change: Add ½ tsp lemon juice at the table and watch the drink turn from blue to purple. Garnish with mint and fresh coconut pieces.Option 2: Hot Butterfly Pea Tea (For Winter Evenings)Brew: Simmer 1 cup (240ml) water with 8–10 butterfly pea flowers for 2 minutes. Strain into a mug.Add the gond katira: Stir in 2 tbsp gond katira jelly.Sweeten: Add honey or brown sugar to taste. If using honey, let the tea cool for a minute first.Finish: Stir in ½ tsp lemon juice for a fresh, citrusy taste and the colour change.Why Does Butterfly Pea Tea Change Colour?Butterfly pea flowers come from the Clitoria ternatea plant and are rich in natural plant pigments called anthocyanins, the same family of pigments found in blueberries and red cabbage. These pigments react to acidity. In plain water the tea is blue, but as soon as you add something acidic like lemon juice, the pigments shift and the colour moves towards violet and purple. Add more lemon and it can turn almost magenta. It is a simple bit of kitchen science, which is why this drink is such a hit with children and at parties.Why You Might Enjoy This DrinkCaffeine-free: Butterfly pea flowers contain no caffeine, so the hot version is a pleasant choice in the evening.Naturally coloured: The blue and purple come entirely from the flowers, with no artificial food colouring.Refreshing and hydrating: The cold version is mostly coconut water and ice, which makes it a lighter alternative to fizzy drinks on a hot day.Plant pigments: Butterfly pea flowers naturally contain anthocyanins, a type of antioxidant plant compound, although research on their effects in people is still limited.A traditional favourite: Gond katira has long been used in South Asian summer drinks for its cooling feel and silky texture.This drink is meant to be enjoyed as part of a balanced diet. It is not a treatment or cure for any health condition.Nutrition (Approximate, Per Glass)Cold version (unsweetened): around 45–50 kcal, mostly from the coconut waterHot version (unsweetened): under 5 kcalAdding sweetener: 1 tsp honey adds roughly 20 kcalFigures are estimates and will vary with the brands you use.Tips and SwapsMake a big batch: Brew a stronger butterfly pea tea concentrate (20 flowers in 1 cup water), cool it and keep it in the fridge for up to 2 days. Pour over ice and coconut water whenever you want a glass.No coconut water? Use chilled still or sparkling water and a little honey instead.Party trick: Serve the lemon juice in a small jug on the side so guests can make the colour change themselves.Extra flavour: Add a few slices of fresh ginger or a strip of lemon zest while brewing.Storing the jelly: Soaked gond katira keeps in an airtight container in the fridge for 2–3 days.More floral drinks: If you enjoy this, try our Hibiscus & Floral Herbal Iced Tea or start your day with a Morning Booster Shot.A Note on SafetyAlways soak gond katira fully before using it, and never eat the dry crystals, as they swell a great deal. Start with a small amount if you have not tried it before. If you are pregnant, breastfeeding, taking regular medication or have a medical condition, check with your GP or healthcare provider before adding butterfly pea flower tea or gond katira to your routine, as there is limited research on them in these situations.