Blue Butterfly Pea Flower

Dried Blue Butterfly Pea Flowers (Clitoria ternatea, Natural Blue Food Colouring, Thailand)

A vivid, naturally pH-sensitive flower that produces a deep indigo-blue colour in hot or cold water - and transforms to violet or purple when mixed with lemon juice or any acidic liquid. Sourced directly from a farming partner in Thailand, these dried butterfly pea flowers are one of nature's most striking natural food colourants, used in drinks, cocktails, baking, and textiles worldwide.

What Are Butterfly Pea Flowers?
Butterfly pea flower (Clitoria ternatea) is a flowering plant native to Southeast Asia, long used in traditional cuisine and Ayurvedic practice. Its petals contain anthocyanins - the same class of pigment found in red cabbage and blueberries - which are deeply pH-sensitive. In neutral water, the colour is a rich, dark blue. Add an acid (lemon juice, lime, vinegar) and the pH shifts, turning the liquid violet or purple. This colour-changing property makes it one of the most visually dramatic natural ingredients available for food and drink applications.

Unlike artificial blue dyes such as E133 (Brilliant Blue), butterfly pea flower is entirely plant-derived, free from artificial additives, and carries no mandatory warning labels.

Colour Behaviour
Blue (neutral water) → Violet (mildly acidic) → Pink/Purple (strongly acidic)

Key Features

• 100% dried butterfly pea flower. Nothing added - no preservatives, colourings, or additives
• Natural pH-sensitive colour change. Blue to violet to purple depending on acidity - no artificial dyes required
• Rich in anthocyanins - the antioxidant pigments responsible for the colour-changing effect
• Versatile format. Use in hot drinks, cold brew, cocktails, baking, and natural dyeing
• E133-free and additive-free - a clean-label alternative to artificial blue food colouring
• Origin: Thailand · Packed in: UK

How to Use Butterfly Pea Flowers

Hot Blue Tea (fast method):
Add 3–4 flowers to hot water. The deep blue colour develops in approximately 5 minutes - stir occasionally to speed the process. Add honey to sweeten. Add lemon juice to shift the colour from blue to violet.

Cold Brew (slow method):
Add 6–7 flowers per litre of cold water. Leave overnight in the fridge. The result is a vivid blue cold brew - ready to serve over ice or use as a cocktail base.

Cocktails & Mocktails:
Use butterfly pea flower cold brew or tea as a base for colour-changing cocktails and mocktails. Adding tonic water, citrus, or any acidic mixer triggers the colour shift live in the glass - a dramatic and crowd-pleasing effect.

Lattes & Drinks:
Brew a concentrated butterfly pea flower tea and combine with warm frothed milk for a blue or purple latte. Add lemon or citrus syrup to shift the colour before adding milk.

Baking & Desserts:
Use the brewed tea as a natural blue liquid in cake batter, bread dough, macarons, rice, or icing. The colour is heat-stable enough for most baking applications.

Natural Textile Dyeing:
Butterfly pea flower produces a natural blue-purple dye suitable for fabric and clothing - a traditional use across Southeast Asia.

Product Details

• Ingredient: 100% Dried Butterfly Pea Flower (Clitoria ternatea)
• Origin: Thailand
• Packed in: UK
• Format: 100g or 1kg
• Additives: None
• Allergens: None declared

Wholesale Available: Available in bulk quantities - please enquire.

Check out this video of this product's colour changing properties:

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