Builders Tea
A strong, milky, well-sweetened mug, the everyday standard rather than a delicate cup.

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A white mug filled with strong, milky tea on a wooden table
Serving
Drink spec, per drink
Every figure above is per drink and does not move with the count, which is what makes the two service modes comparable. Sugar per litre, strength and standard drinks stay in the units their own authorities publish, because they are figures for comparing rather than for pouring.
Diet and allergen labels are computed from the ingredients listed on this page and nothing else. They cannot account for cross-contamination or for the particular product you buy, and they are not medical or safety guidance.
Extraction
No extraction yield is shown. It needs a measured dissolved-solids figure from the finished cup, nothing on a bag of coffee supplies one, and estimating it from the method would be inventing the single number the calculation exists to establish.
Ingredients
Glass
Vessel
340 ml of liquid, served without ice, inside the 350 ml the glass holds. The build fails if a recipe ever exceeds its stated vessel.
A batch needs a vessel that closes and fits a fridge shelf.
Method
3 steps · 4m 35sPour the 300 ml water at 100 °C over the 4 g black tea and leave to steep for 4m.
A robust black leaf needs a full boil to open at all, and this dose is well above a delicate cup's: closer to a third again as much leaf for the same water. That strength is the point: it is what stands up to the 50 ml whole milk rather than being flattened by it.
Lift out the leaf or bag and discard it.
Stir in the 50 ml whole milk and the 8 g granulated sugar until the sugar has dissolved.
Common pitfallA bag left in the mug keeps extracting after the tea is already strong enough, and the tannin that comes out last is what reads as bitter rather than merely strong.
Keeping and make-ahead
Steeped one mug at a time. Leaving the bag in past the stated time keeps drawing out tannin long after the strength is right.
About
A strong, milky, sweet mug of black tea named for the trade most associated with drinking many of them in a working day.
The name identifies the drinker rather than the drink: workers in the British building trade are conventionally understood to get through a great many cups of tea across a working day, and the strong, dark-beige brew they favour picked up their trade's name for it rather than a name of its own 1. It is also known as a builder's brew or a gaffer's tea, and the terms are used across both Great Britain and Ireland 1.
What identifies the drink itself is the method as much as the trade: a teabag steeped directly in a mug rather than a pot, brewed hard enough to stand up to milk without turning pale, and finished with sugar, commonly a teaspoon or two of it, stirred in either before or after the milk 1. None of that is unusual English tea practice on its own. What sets a builder's tea apart from an ordinary cup is degree: a stronger dose, a longer steep, and a settled expectation of milk and sugar rather than a matter of the drinker's taste, so that a weak or unsweetened cup served under the name would be recognised as a contradiction rather than a variant.
No exact date attaches to the term's first use, but it rose to wider public recognition in the 1970s, in an account that ties the drink to construction and manufacturing workers who wanted something quick to make and strong enough to keep them going through a shift (commonly built on a darker, more robust blend than a milder afternoon tea would use) 2. That account and the trade-name explanation agree on the essentials: a working drink defined by strength and speed rather than by any particular leaf, and a name that has outlasted any claim on who actually started making it that way.
- 1Builder's teaen.wikipedia.org
- 2What Exactly Is A Traditional Builders Tea?tastingtable.com