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A clear cup holds a translucent, vivid indigo-blue infusion with a smooth surface and a few blue flower petals floating near the rim.
●Low GI

Blue tea Calories

Caffeine-free herbal tea, very low calorie, contains antioxidants

CALORIES · 100 G

1kcal

GI

0low

POTASSIUM · 100 G

8mg

FIBER · 100 G

0g

Quick answer

1 cup (medium) of Blue tea (240 g) has 2 calories. That works out to 1 calories per 100 g. It contains 0.5 g of carbs, 0 g of protein, 0 g of fat and 0 g of fiber. Its glycemic index is 0 (low), so it raises blood sugar slowly.

Blue tea Nutrition Facts

Selected: 1 cup (medium) · 240 g

2

KCAL / 240G

Carbs

0.5g

· 0% DV

Protein

0g

· 0% DV

Fat

0g

· 0% DV

Fiber

0g

· 0% DV

DV is the share of the daily value covered, on a 2,000 kcal reference diet.

Calories come from: Carbs 100% · Protein 0% · Fat 0%

Blue tea nutrition facts table · 1 cup (medium) (240 g)

NutrientAmount% DV
Calories2 kcal
Total fat0 g0%
Saturated fat0 g0%
Trans fat0 g
Sodium2.4 mg0%
Total carbohydrate0.5 g0%
Fiber0 g0%
Protein0 g0%

Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.

Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.

Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.

Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.

Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.

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How Many Calories in 1 Cup of Blue tea?

ServingAmountCalories
1 cup (medium)240 g2 kcal
1 teaspoon (whole)2 g0 kcal
2 teaspoon (double)4 g0 kcal
100 g100 g1 kcal
1 cup (small)180 g2 kcal
1 serving (medium)240 g2 kcal
1 cup (large)350 g4 kcal

Calculated from 1 calories per 100 g.

Frequently Asked Questions About Blue tea

What is Blue tea made from?

Blue tea is usually an infusion of dried butterfly pea flowers, also called Clitoria ternatea. It is a herbal infusion rather than a tea made from the leaves of the tea plant, so its vivid blue color comes from the flowers.

Why does Blue tea change color when you add lemon?

Blue tea turns purple or pink when lemon is added because the lemon’s acidity changes the drink’s pH. The color shift is a natural reaction, not a sign that the tea has gone bad.

How do you make Blue tea?

To make Blue tea, pour hot water over the dried flowers, let them steep for a few minutes, and strain. Steeping longer gives the infusion a deeper color; add lemon afterward if you want a tart, color-changing drink.

Does Blue tea have caffeine?

No, Blue tea made from butterfly pea flowers is naturally caffeine-free. That makes it an option for people avoiding caffeine, though a packaged blend may contain other ingredients, so its contents can differ from a pure flower infusion.

What does Blue tea taste like?

Blue tea has a mild, earthy, slightly vegetal taste and is not naturally very sweet. Its flavor is subtle, so people often add lemon, honey, or mint rather than expecting the bold taste of black tea.

Can Blue tea help with weight loss?

No, Blue tea has not been shown to cause weight loss or burn fat. Unsweetened, it can replace a higher-calorie drink, but it should not be treated as a slimming product.

Is Blue tea good for you?

Blue tea contains antioxidant compounds, but evidence does not establish that drinking it prevents or treats disease. It can be enjoyed as a caffeine-free herbal drink, not as a substitute for medical care or prescribed treatment.

Can you drink Blue tea before bed?

Yes, Blue tea is caffeine-free, so it is unlikely to cause the caffeine-related sleep disruption associated with coffee or regular tea. Avoid a large drink right before bed if waking to urinate interrupts your sleep.

Can Blue tea be served cold?

Yes, Blue tea works well as an iced drink. Brew it first, let it cool, then pour it over ice; citrus juice can turn the blue infusion purple or pink as well as add tartness.

Are there side effects from drinking Blue tea?

Most people tolerate Blue tea as a drink, but allergic reactions or stomach discomfort are possible. If you are pregnant, breastfeeding, or taking regular medication, ask a healthcare professional whether it is appropriate for you.

Blue tea Vitamins & Minerals

Vitamins

Vitamin C

0.48mg · 1% DV

B2

0mg · 0% DV

Folate

1.2µg · 0% DV

Vitamin A

2.4µg · 0% DV

Minerals

Manganese

0.05mg · 2% DV

Copper

0.01mg · 1% DV

Magnesium

4.8mg · 1% DV

Calcium

7.2mg · 1% DV

Potassium ⭐

19mg · 1% DV

Sodium

2.4mg · 0% DV

Blue tea Glycemic Index

GLYCEMIC INDEX

0
Low
0 Low5570100

GLYCEMIC LOAD

0
Low

Accounts for portion size — a more realistic measure than GI alone.

How to Burn Off Blue tea

To burn the 2 calories in 1 cup (medium) (240 g):

🚶

1min

Walking (5 km/h)

🏃

1min

Running (8 km/h)

🚴

1min

Cycling

🏊

1min

Swimming

Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.

What is Blue tea?

Blue tea is an herbal infusion made by steeping the vivid blue flowers of the butterfly pea plant (Clitoria ternatea). It is associated with South and Southeast Asia, where the flowers have long been used to make a strikingly coloured drink. A squeeze of lemon or another acidic ingredient can shift its colour from blue toward purple.

Its flavour is mild and earthy, so it is often served plain, with lemon, or lightly sweetened; it works both hot and chilled over ice. In places where it is less familiar, it makes an easy caffeine-free alternative to black tea or a colourful base for iced drinks. It is very low in calories—1 per 100 g according to the table—and keeping it unsweetened lets its gentle flavour come through.

How Nutritious Is Blue tea?

Nutrient density

Low

22/ 100

How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.

Satiety score

Medium

40/ 100

An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.

Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.

Is Blue tea Processed?

NOVA 2

Minimally Processed

1. Unprocessed

2. Minimally Processed

3. Processed

4. Ultra-Processed

NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.

Does Blue tea Contain Allergens?

No known major allergens

Gluten free
Dairy free
Eggs free
Peanuts free
Tree nuts free
Fish free
Soy free
Sesame free

Which Diets Is Blue tea Good For?

Vegan

✓ Suitable

Vegetarian

✓ Suitable

Gluten-Free

✓ Suitable

Dairy-Free

— Not suitable

Mediterranean

✓ Suitable

Paleo

✓ Suitable

Whole30

— Not suitable

DASH

— Not suitable

Keto

✓ Suitable

Low FODMAP

— Not suitable

Blue tea Fat Profile

SATURATED

0g

MONOUNSATURATED

0g

POLYUNSATURATED

0g

Compare Blue tea

🫖vs☕️
Blue tea vs Turkish coffee6 kcal fewer per 100 g
→
🫖vs🥛
Blue tea vs Ayran36 kcal fewer per 100 g
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🫖vs🧊🍵
Blue tea vs Iced Tea19 kcal fewer per 100 g
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🫖vs🍵
Blue tea vs TeaSame calories per 100 g
→

Foods Similar to Blue tea

☕️

Turkish coffee

7 kcal

🥛

Ayran

37 kcal

🧊🍵

Iced Tea

20 kcal

🍵

Tea

1 kcal

🥤

Detox Water

2 kcal

🥤

Soda

42 kcal

☕️

Coffee

2 kcal

🥤

Cola

42 kcal

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Nutrition data compiled from USDA FoodData Central and scientific sources.