Joybuy Insights

Buying Green Tea: A Guide to Tea Bags, Matcha and Ready-to-Drink Options

Green tea is available in many forms in the UK: Japanese green tea, Sencha tea, Matcha tea, green tea tea bags and ready-to-drink refreshments. The wide choice makes shopping easier, but it can also lead to unsuitable purchases. An eye-catching label says little about whether a product matches your drinking habits.

Common pitfalls when buying green tea

1. “Green tea” is assumed to mean “unsweetened”

A ready-to-drink beverage made with green tea extract may also contain sugar, fruit juice, sweeteners or flavourings. If you are specifically looking for unsweetened green tea, you should therefore check the nutritional information and ingredients list. Looking only at the front of the packaging is not always enough.

For comparison: ITOEN Oi-Ocha Green Tea 330 ml lists 0 g of sugar and 0 kcal per 100 ml in its product description. By contrast, Fuze Tea Green Tea Mango Chamomile contains 4.3 g of sugar per 100 ml according to the product information. Both drinks belong to the green tea category, but they appeal to different preferences.

2. Flavour descriptions can hide the actual ingredients

Green tea with lemon, green tea with honey, green tea with mango or a flavoured green tea can offer a varied taste experience. However, what matters is whether the product actually contains fruit juice, honey, flavouring or simply green tea extract. You should therefore check:

  • the order of the ingredients;
  • the proportion of fruit juice or honey;
  • the sugar and energy content;
  • information about sweeteners and acidity regulators.

A product labelled green tea iced tea is generally ready to drink and does not need to be brewed like loose-leaf tea. It is therefore more of a convenient refreshment than a substitute for a classic cup of Sencha.

3. Brewing temperature and serving size are underestimated

Water that is too hot can make the flavour of some Japanese teas seem stronger and more bitter. For example, the Otsuka Do Yunomi Green Tea Bag specifies a water temperature of around 80 °C and a brewing time of 30 to 60 seconds. The amount per bag is also relevant: with 2 g of tea per bag, it is easier to judge the dosage than with blends that do not clearly state this information.

Important buying criteria for green tea

Ingredients and type of tea

A short ingredients list is helpful if you want a clear, unadulterated flavour. Products such as pure Sencha or Matcha made with 100% green tea contain no added flavourings or sweeteners. With Japanese tea specialities, it is also worth checking the specific variety:

  • Sencha: steamed or heated green tea leaves with a fresh, grassy profile;
  • Matcha: finely ground green tea powder that is consumed in its entirety;
  • Hojicha tea: roasted green tea with a distinctive toasted flavour;
  • flavoured green tea: green tea with added flowers, fruit or flavourings.

Packaging, quantity and storage

Individually wrapped tea bags are practical for the office, travelling and occasional brewing. According to the manufacturer, they protect the product from moisture and the transfer of odours. Once opened, tea and Matcha should be stored in a cool, dry place away from direct sunlight. As a fine powder, Matcha is particularly sensitive to air and moisture, so an airtight container is a sensible choice.

You should also compare more than just the pack price and look at the usable quantity. A pack of 20 bags is suitable for regular consumption, while a small pack of Matcha may be intended for portioned preparation, latte drinks or baking recipes.

Sugar, calories and additives in ready-to-drink beverages

For ready-to-drink green tea, the figures per 100 ml are what matter. For a 500-ml bottle, the values need to be multiplied accordingly. This helps you assess the actual sugar content of a full serving.

The ITOEN Oi-Ocha Matcha Green Tea Pack 330 ml is described as an unsweetened drink and contains Matcha as well as water and green tea extract. By contrast, products such as Volvic Green Tea Mint or Pfanner Green Tea Lemon & Prickly Pear contain sugar according to the product data. A “light” or “refreshing” flavour is therefore not a reliable indication of the nutritional value.

Our selection by user profile

Suitable for: Budget-conscious beginners
Otsuka Do Yunomi Green Tea Bag 30g

Otsuka Do Yunomi Green Tea Bag 30g

Why this product suits the profile: 15 individually portioned bags, each containing 2 g of Japanese Sencha, are ideal for a daily cup at home, in the office or on the go.

How this product avoids the pitfall

The ingredients and number of bags are clearly stated. The recommended preparation using water at around 80 °C makes the intended use easy to understand.

Main benefit & strengths

100% Japanese green tea according to the product information; 15 individually wrapped 2-g bags.

Suitable for: Quality-focused buyers
HAMASA YUKI Sen Cha Tea 20Bags 40g

HAMASA YUKI Sen Cha Tea 20Bags 40g

Why this product suits the profile: The pack contains 20 individually wrapped bags with 2 g of pure Japanese Sencha for consistently portioned preparation.

How this product avoids the pitfall

The ingredients list contains green tea only; the product data does not list any additional flavourings or blends.

Main benefit & strengths

40 g total contents; origin and production in Japan according to the product description.

Suitable for: Special uses & frequent drinkers
HISHIWAEN Uji Matcha 30g

HISHIWAEN Uji Matcha 30g

Why this product suits the profile: Matcha fans can use the powder for traditional preparation, Matcha lattes, smoothies or baking recipes.

How this product avoids the pitfall

The product data states 100% green tea and a specific dosage of around 1 g per 100 ml of water.

Main benefit & strengths

30-g pack; Matcha powder ground from Tencha according to the product description; suitable for drinks and food.

Suitable for: On-the-go drinkers
ITOEN Oi-Ocha Green Tea 330ml

ITOEN Oi-Ocha Green Tea 330ml

Why this product suits the profile: The ready-to-drink format is ideal for work, train journeys or situations where no kettle is available.

How this product avoids the pitfall

The nutritional information states 0 g of sugar and 0 kcal per 100 ml. This makes it easier to compare with sweetened iced teas.

Main benefit & strengths

330-ml bottle; unsweetened recipe according to the product information; consume soon after opening.

Looking for more options?

We have put together a complete, regularly updated list of products that fully meet these strict selection criteria and the safety regulations applicable in the EU.

Preparing and storing green tea every day

For Sencha and other loose-leaf or portioned green teas, the temperature stated on the packaging is the key reference. For delicate varieties, start with a shorter brewing time and then adjust the strength to taste. Matcha is not strained; instead, it is whisked or stirred with water. With Hojicha tea, on the other hand, the roasted flavour takes centre stage, and preparation depends on the instructions on the relevant pack.

Unopened ready-to-drink beverages should be stored according to the manufacturer’s instructions, then refrigerated after opening and consumed soon afterwards. For products containing lemon, mango or honey, it is worth checking the sugar and fruit juice content before buying.

Frequently asked questions about green tea

How long does green tea keep?

The best-before date is printed on the packaging. Unopened tea should be stored in a dry, cool, dark place away from strong odours. Opened Matcha should be sealed particularly tightly, as moisture and air can affect its flavour.

How should green tea be prepared?

The exact recommendation depends on the variety and product. A Sencha tea bag may require water at around 80 °C and a brewing time of 30 to 60 seconds. Matcha is often prepared using approximately 1 g of powder and around 100 ml of hot water. The instructions on the relevant packaging remain the most important guide.

Is a ready-to-drink beverage or tea bag cheaper?

This depends on the pack size, number of servings and how much you drink. Tea bags require hot water and usually create less packaging per cup. A ready-to-drink beverage is available immediately, but may cost more per litre because of individual packaging and additional ingredients. Therefore, compare the unit price as well as the sugar and quantity information.