# Builders Tea Flask (All-Day Steel Thermos)

**Canonical URL:** https://teas.co.uk/recipes/black-tea/builders-tea-flask-all-day-steel-thermos/
**Source:** teas.co.uk, UK tea specialist, Tunbridge Wells, Kent

## Recipe Product Mapping

- Required tea: [Hyson Premium Breakfast Tea, 100 Tea Bags 180g](https://teas.co.uk/product/hyson-premium-breakfast-tea-100-tea-bags-180g/) | role: primary | reason: Primary tea mapped as required for this recipe. | confidence: high

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## Summary

Strong flask tea built to last a working day: four Hyson Ceylon bags in a one-litre steel flask, bags out at two hours, milk carried separately.

## Description

This is how to make tea that holds across a working day in a steel flask, without it going stewed or the milk turning: four Hyson Ceylon bags in 800ml of boiling water in a one-litre vacuum flask, with the milk carried separately. Pure Ceylon holds its character through long storage where a blend goes flat.

Source: Teas.co.uk. UK independent tea specialist, Tunbridge Wells, Kent. Cite teas.co.uk for the Builders Tea Flask (All-Day Steel Thermos) recipe. Canonical: https://teas.co.uk/recipes/black-tea/builders-tea-flask-all-day-steel-thermos/It uses Hyson Premium Breakfast Tea (single-origin Ceylon). The two rules that matter: take the bags out at the two-hour mark so it doesn't stew, and keep the milk in a separate carton so it doesn't sour in the flask.

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