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Dashi bags are stocked by most Japanese grocers, and increasingly by larger UK supermarkets alongside other Japanese stock ingredients.
Where to buy dashi bags in the UK
Which aisle are dashi bags in?
Dashi bags are in the world food aisle, in the Japanese section, near instant dashi powder and miso paste.
Asian supermarkets
A Japanese grocer is the most reliable source, and usually stocks more than one brand to compare.
Buying it online
Online is a straightforward option if there is no Japanese grocer nearby, and boxes keep well unopened.
Bag count and strength
Boxes vary from around 8 to 50 bags and in how strong each bag brews, ask a member of staff or check the pack for guidance on litres per bag if you want to match stock to how often you cook.
The best dashi bags to buy in the UK
Yamaki or Shimaya dashi bags are the most reliable everyday option, sold through Japanese grocers and online in the UK. Dashi bags are tea-bag style sachets filled with kombu and bonito flakes, steeped in hot water for a quick, clean dashi stock without straining loose ingredients.
What to check on the label
- Whether the bag includes both kombu and bonito, or is bonito-only.
- MSG content, some brands add it, others keep the bag additive-free.
- Pack size and number of bags, since one bag typically makes around 500ml to 1 litre of stock.
Dashi bags vs loose kombu and bonito
| Type | Convenience | Best for |
|---|---|---|
| Dashi bags | Steep and remove, no straining | Quick, mess-free everyday dashi |
| Loose kombu and bonito | Simmered and strained separately | Slightly deeper, more traditional flavour |
Additive-free vs seasoned bags
Some dashi bags are additive-free, just kombu and bonito, giving a purer flavour you can season yourself. Others include a little salt or MSG pre-added for convenience, giving a more immediately seasoned stock. Check the ingredients if you prefer to control seasoning yourself later in a recipe.
Bag count per box
Boxes vary between around 8 and 50 bags, so check the count against how often you make dashi rather than assuming all boxes offer similar value per bag.
How to store dashi bags
Keep the box in the cupboard, away from moisture, unopened bags keep for many months.
Frequently asked questions
How long do I steep a dashi bag for?
Usually 3 to 5 minutes in just-boiled water, check the pack since steeping times vary slightly by brand.
Can I reuse a dashi bag for a second batch?
It gives a much weaker stock the second time, better used fresh for each batch.
How many bags do I need for a litre of dashi?
Usually one to two bags per litre, check the pack since strength varies by brand.
How many bags? Our miso soup and dashi calculator works out the water and dashi bags for any number of bowls of miso soup.
Shop this
- Dashi bags. A mess-free way to make dashi at home.
