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How Much Caffeine in Irish Breakfast Tea?

Ever craved a hearty, flavorful brew that can stand up to the grayest of mornings?

Irish Breakfast tea is the only answer!

Imagine waking up to a world soaked in mist, and all you desire is a robust cuppa that’s as bold as your determination to face the day.

That’s where Irish Breakfast tea comes in, with its rich, invigorating flavor that can conquer even the gloomiest of days.

We all know that tea has caffeine in it and so does Irish tea, that’s why it energizes people for such dank days in Ireland.

But how much of this stimulant is present in Irish tea?

irish breakfast tea has similar taste to english breakfast tea

How Much Caffeine in Irish Breakfast Tea?

Being a black tea, Irish Breakfast tea has 40-55 mg caffeine in a cup.

It has 40 mg caffeine in 6 oz. cup and around 55 mg caffeine in 8 oz. cup.

Cup SizeAverage Caffeine Content
6 ounces40 milligrams
8 ounces55 milligrams
12 ounces80 milligrams
16 ounces107 milligrams

But remember, these numbers are approximations, and the actual caffeine content can vary depending on how you brew your tea.

Why Does Irish Tea Have Caffeine?

Irish tea gets its caffeine kick from black tea leaves.

But not just any black tea – it’s a blend of Assam, Kenyan, Ceylon, Darjeeling, and Rwandan black teas that give it that bold flavor.

Now, here’s the interesting part.

These black teas vary in caffeine content.

Assam brings the most, Kenyan follows, and Rwandan, well, it’s on the lighter side.

So, when they come together in your Irish tea, you get a delightful brew with a caffeine level that can wake you up without overdoing it.

Here’s a handy table breaking down the different teas commonly found in Irish tea blends and the caffeine they contribute:

Tea VarietyFlavor ProfileCaffeine Contribution
Assam Black TeaRobust, Malty40-50%
Kenyan Black TeaBrisk, Bold25-30%
Ceylon Black TeaBright, Citrusy10-15%
Darjeeling Black TeaFloral, Delicate5-10%
Rwandan Black TeaFull-Bodied, Fruity5-10%

How Much Caffeine in Irish Breakfast Tea Leaves?

Irish Breakfast tea is not a type of tea.

But it is a blend of 2-3 robust black teas, often featuring Assam as its base, known for its rich and hearty flavor.

Other black teas like Darjeeling and Ceylon can also make their way into this blend.

So, here’s a table on caffeine levels in different types of tea leaves that are a part of Irish tea blends.

Black Tea VarietyCaffeine Content (per 8-ounce serving)
Assam Black TeaApproximately 60-80 mg
Kenyan Black TeaAround 40-70 mg
Darjeeling Black TeaTypically contains 30-50 mg
Ceylon Black TeaAverages about 40-60 mg

Want a quick recipe?  Check this 8 minutes Irish Tea Recipe now!

How Many mg of Caffeine is in Decaffeinated Irish Breakfast Tea?

Decaffeinated Irish Breakfast tea usually contains around 2-10 milligrams of caffeine per 8-ounce cup.

It’s not completely caffeine-free, but it’s significantly less compared to regular tea or coffee.

So, if you’re looking for a truly caffeine-free option, you might want to explore herbal teas instead.

What Is The Difference Between English Breakfast Tea and Irish Breakfast Tea?

English Breakfast tea became a breakfast staple in England to replace heavy ale.

It pairs perfectly with breakfast foods and is commonly enjoyed with milk and sugar.

AspectIrish Breakfast TeaEnglish Breakfast Tea
OriginBlend of black teas, often Assam, Ceylon, and KenyanBlend of black teas, such as Assam, Ceylon, and Darjeeling
FlavorStrong and robust flavor, malty notesFull-bodied and brisk, often with hints of maltiness
Caffeine ContentHighHigh
ColorDark, reddish-brownDeep, dark brown to black
Ideal PairingBreakfast foods, hearty meals, or as a pick-me-upBreakfast foods, often with milk and sugar
Regional PreferenceIrelandEngland
Cultural TraditionEnjoyed throughout the dayTypically a breakfast tea

Originally made from Chinese black tea (Keemun), it now combines various black teas like Kenyan, Ceylon, Assam, Sikkim, Malawi, Darjeeling, and Nilgiri.

Caffeine in Irish Breakfast Tea vs. Other Teas

Here’s how Irish Breakfast tea compares to other tea types:

Tea TypeCaffeine Content (mg)/8 oz. cup
Irish Breakfast Tea40-55 mg
Black Tea (generic)50-90 mg
Green Tea30-50 mg
White Tea15-30 mg
Oolong Tea50-70 mg
Herbal Tea0 mg (caffeine-free)

Caffeine in Irish Breakfast Tea vs. Coffee

Irish Breakfast Tea is a bold and robust brew that’s got some caffeine, but it’s not as heavy-hitting as coffee.

A typical 8-ounce cup of Irish Breakfast Tea packs around 55 mg of caffeine, while your average cup of coffee brings the thunder with 95-165 mg.

Now, I get it – sometimes we need that jolt to kickstart our day.

But here’s the catch: too much caffeine can lead to jitters and a mid-morning crash.

BeverageAverage Caffeine Content (per 8 oz cup)Flavor ProfileWake-Up Style
Irish Breakfast Tea55 milligramsRobust, malty, and briskA calm, steady rise
Drip Coffee95 milligramsBold, bitter, and richA caffeine rollercoaster
Espresso (1 oz)64 milligramsIntense and concentratedA swift caffeine punch
Decaf Coffee2-5 milligramsMild and decaffeinatedA whisper of caffeine

So, if you’re looking for a gentler, more even-keeled energy boost, Irish Breakfast Tea might just be your cup of choice.

irish breakfast tea caffeine reduction

How to Reduce Caffeine in Irish Breakfast Tea

Do you love the bold flavor of Irish Breakfast Tea but wish it had a bit less caffeine?

I get it, I’ve been there too.

Lemme share some practical tips to help you enjoy your tea without the jitters.

1. Choose a Decaffeinated Version

A simple and effective way to reduce caffeine intake is to opt for decaffeinated Irish Breakfast Tea.

It has undergone a process to remove most of the caffeine, leaving the flavor intact.

Just make sure to check the label for “decaffeinated” when you’re shopping for your tea.

2. Blend with Herbal Teas

Here’s where we get a little creative.

Mix your Irish Breakfast Tea with herbal teas like chamomile, peppermint, or rooibos.

These naturally caffeine-free options add delightful flavors that complement the robustness of your Irish tea while diluting the caffeine content.

3. Shorten the Steeping Time

The longer you steep your tea, the more caffeine it extracts.

So, reduce the steeping time.

Start with one to three minutes and adjust to your preferred strength.

You’ll still savor that signature Irish Breakfast flavor without an excessive caffeine punch.

4. Half-and-Half

Here’s a neat trick: Brew a cup of your regular Irish Breakfast Tea and mix it with an equal amount of hot water.

This cuts the caffeine content in half while maintaining the taste you adore.

And and.. you get a second cup of Irish tea to savor!

5. Cold Brew for Less Caffeine

Want a refreshing twist? Try cold brewing your Irish Breakfast Tea.

This method naturally extracts less caffeine.

Place your tea bags or loose leaves in cold water and steep in the fridge overnight.


A milder caffeine kick with a cool, refreshing taste.

6. Opt for Loose Leaf Irish Tea Blend

Sometimes, it’s all about the quality.

High-quality loose leaf Irish Breakfast Tea tends to have lower caffeine content compared to tea bags.

(Its because of the surface area, broken leaves have more surface area in tea bags for caffeine extraction.)

Plus, it’s a more environmentally friendly choice!

7. Gradually Transition

If you’re concerned about the flavor changes when reducing caffeine, consider a gradual transition.

Mix regular and decaffeinated tea initially, then slowly increase the decaffeinated portion until you’ve fully made the switch.

Snag Your FREE Brewing Guide Now!

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Does Irish Breakfast Tea Affect Your Sleep?

YES, Irish Breakfast tea can affect your sleep.

That delightful flavor of Irish tea comes with a caffeine kick that can keep you tossing and turning.

But you don’t have to give up your beloved brew.

Just be mindful of when you sip it.

Opt it for a morning delight and switch to caffeine-free options in the afternoon.

Your sleep will thank you, and you can still enjoy your cuppa joy!

Does Irish Breakfast Tea Cause Dehydration?

You bet, Irish Breakfast Tea can leave you feeling parched.

It’s a bit of a sneaky one, but that caffeine in your tea can have a diuretic effect, making you lose fluids.

So, while it’s a tasty way to start your day, remember to balance it with a glass of water to stay hydrated.

Keep sipping your tea, just don’t forget to give your body the H2O it needs to stay in tip-top shape!

Can You Drink Irish Breakfast Tea Daily?

Absolutely, you can enjoy Irish Breakfast Tea daily, but moderation is key. I love my daily cup too!

Since it packs a caffeine punch, keep it to mornings or early afternoons to avoid sleep disruptions.

Also, listen to your body; if it starts causing jitters or discomfort, it might be time for a break.

How Many Cups of Irish Breakfast Tea Can You Drink Daily?

In Ireland, people typically enjoy about 4 to 6 cups of tea a day, with each cup being roughly 6 to 8 ounces in size.

If you’re drinking 6-ounce cups of Irish Breakfast Tea (with around 40 mg of caffeine per cup), you could safely have up to 10 cups to stay within the recommended daily caffeine limit of 400 mg.

But if you prefer 8-ounce cups (with about 55 mg of caffeine per cup), it’s best to stick to around 7 cups to keep caffeine-related side effects at bay.

In my opinion, sticking to the Irish tradition is a good way to savor your tea without worrying about exceeding the recommended daily caffeine limit.

Frequently Asked Questions (FAQs)

What kind of tea is Irish tea?

Irish Breakfast tea is a strong black tea blend, known for its robust and malty flavor.

The caffeine content in Irish Breakfast tea can vary, but on average, it contains about 40-70 mg of caffeine per 6-ounce cup and about 55-90 mg per 8-ounce cup.

Yes, Irish Breakfast tea is considered high in caffeine compared to other tea varieties.

Irish Breakfast tea generally contains 40 mg of caffeine per 6-ounce cup.

Irish tea is not stronger in caffeine than coffee. Coffee usually contains 2x more caffeine per serving.

Irish Breakfast tea tends to have slightly more caffeine than English Breakfast Tea.

But the difference is not substantial. Both are high-caffeine black tea blends.

It’s because Irish tea blends are based mainly on Assam black teas. These are generally brewed for a longer time than English breakfast tea (brewed for a few minutes.) 

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