Best Matcha Powder UK (2026): Lead, Caffeine and Our Picks

What makes matcha different from green tea?

Matcha is made from tea leaves shaded for a few weeks before harvest, then steamed, dried and stone-ground into powder. Because you whisk the whole leaf into water, you consume everything in it, rather than discarding the leaves as with brewed tea. That means more of the good compounds, and potentially more of anything unwanted.

What does the evidence show?

Catechins and caffeine

Independent testing by ConsumerLab found pure matcha powders contained 50 to 55mg of EGCG per gram, compared with about 20 to 40mg per gram in brewed green teas, and 53 to 72mg of caffeine per serving, versus about 95mg in a cup of brewed coffee. The possible heart and metabolic benefits of green tea come mostly from population studies, which show association, not proof.

Lead and heavy metals

Tea plants can take up lead from soil and air, and because matcha is whole leaf, there has been concern about lead exposure. Independent tests have been reassuring: ConsumerLab found the matcha products it tested in 2015 were nearly free of lead, arsenic and cadmium, and its 2018 review again found matcha powders very low in lead. Results can vary between brands and harvests, and campaign-style testing online is not always done to accredited standards. A brand that publishes recent independent lab results for heavy metals is a plus.

Is green tea bad for your liver?

EFSA's 2018 opinion concluded that catechins from green tea drinks prepared in the traditional way are generally considered fine at normal intakes (about 90 to 300mg EGCG a day). Rare liver reactions have been reported, and supplements giving 800mg EGCG a day or more raised liver enzymes in trials. One or two cups of matcha is well below that, but concentrated green tea extract pills are a different matter.

Our picks at a glance

How we chose

We looked for matcha from Japan, sold by UK brands or retailers with GBP prices, across ceremonial (for drinking with water) and culinary or latte grades (for milk drinks and baking). We gave credit for organic certification, clear origin and brewing guidance. None of our picks publishes product-level heavy metal results on its UK page, which is why all are graded Early; we would upgrade any brand that does.

Ceremonial vs culinary: does grade matter?

'Ceremonial' is not a regulated term. It usually means younger, first-harvest leaves with a brighter green colour, sweeter taste and less bitterness, best whisked with water. Culinary or latte grades use later leaves, taste stronger and are fine with milk or in baking. There is no good evidence that one grade is healthier than another.

Our picks in detail

Clearspring Organic Ceremonial: best overall

Organic, stone-ground matcha from Uji, sold by a long-established UK importer at a fair price. Caveat: no published heavy metal results, and organic certification does not cover lead.

Tenzo Original Blend: best for everyday drinkers

A smooth blend sold as organic ceremonial grade, with larger sizes for regular drinkers. Caveat: limited origin detail on the product page.

Bird & Blend Pure Grade Ceremonial: best award-winner

Shaded for two weeks before harvest, sugar-free and Great Taste awarded, from the company formerly known as Bluebird Tea Co. Caveat: not certified organic; avoid the flavoured matchas if you want no additives.

Matchaeologist Meiko: best specialist

A London specialist with clear brewing guides and a rich, full-bodied sipping tea. Caveat: about £1 per gram in the small tin.

PerfectTed Organic Matcha: best budget

Organic and stocked in supermarkets, easy to add to a weekly shop. Caveat: an everyday grade, best in lattes.

Clearspring Organic Premium: best for lattes and baking

Cheaper organic matcha that stands up to milk, in sizes up to 1kg. Caveat: more bitter when drunk with water alone.

How to make matcha without bitterness

Sift half to one teaspoon (about 1 to 2g) into a bowl, add a splash of water at around 70 to 80C (not boiling, which scorches it), whisk into a paste, then add more water or milk and whisk briskly in a zigzag until frothy. Boiling water and too much powder are the usual reasons for bitterness.

Who should be careful?

• Pregnancy: the NHS advises no more than 200mg caffeine a day. Two or three servings of matcha could approach that alongside other tea, coffee or chocolate.
• Low iron: the NHS notes that large amounts of tea and coffee make it harder to absorb iron from food and tablets. Drink matcha between meals rather than with them, and away from iron supplements.
• Caffeine sensitivity, anxiety or sleep problems: avoid matcha in the afternoon and evening.
• Green tea extract supplements: avoid high-dose pills, especially above 800mg EGCG a day, and check with a pharmacist if you take regular medicines.
• Children: matcha drinks contain caffeine and are not suitable for young children.

If you want to try it: what to look for

1. Origin: Japanese matcha with a named region, such as Uji or Kagoshima.
2. Ingredients: 100% matcha, with no sugar, milk powder or flavourings.
3. Colour: bright green suggests fresher, younger leaves; dull olive powder is older or lower grade.
4. Testing: brands that publish recent, accredited lab results for lead and other heavy metals.
5. Packaging: airtight tins or pouches; keep it in the fridge once opened.

Bottom line

Matcha is a good way to get green tea catechins with moderate caffeine, and independent testing suggests lead levels in matcha are low. Choose a Japanese, ideally organic, matcha such as Clearspring or Tenzo for sipping, or a cheaper latte grade for milk drinks. Limit caffeine in pregnancy and keep it away from iron-rich meals if your iron is low.