We get this question fairly often, when we've not actually changed the profile of the tea. We say the 'profile' because it's important to remember that unlike so many other beverages which are 'made' from a specific recipe of fixed ingredients that can be precisely controlled... tea is a natural agricultural product which by it's nature changes with the seasons. Depending on the varying of rainfall, sunshine, temperature and soil conditions the same tea from the same tea estate can differ. For many tea enthusiasts this is exactly why they love such a diverse and natural product... like wine it is influenced by Terroir.
However the mass production of tea and the commoditization of tea over the centuries has lead to demand for a consistent product and even the tea aficionados will admit that when they find their favourite everyday cuppa they want to know they can come back to that familiar comfort anytime. The skill of our Tea Tasters in Sri Lanka is amongst the best in the world and it is their key focus to maintain both quality and consistency. Because of the changing conditions they taste approximately 11,000 teas every single week from around Sri Lanka to find the exact character required to make the taste 'profile' of, for example our English Breakfast. They do this by tasting up against older samples of the blend and rigourous quality control methods.
As superhuman as tasting 11,000 teas week after week might sound, they are of course only human and the Camellia Sinensis plant is simply a product of nature... so there is potential for variations to occur. This would inevitably be the same if you stick with any brand of tea for long enough and if not you have to question not so much the caliber of their tea tasters but the quality of their tea, for the best tea has more pronounced character and fresh flavour and therefore the harder to keep it consistent. If there's one thing we value over consistency it would be freshness and flavour.
We pay close attention to complaints of this nature when they come in because it really is critical to our ongoing success to deliver to our long term and loyal tea drinkers that familiar and satisfying comfort.
On occasions we have worked with a customer to discover the cause it has come down to the smallest variation in the way the tea has been prepared, sometimes just a small difference which they hadn't realised could make such an impact on the taste. A few common factors that can change the taste of your tea are: 1.) Water quality, changes in your surrounding water supply, piping etc. Levels of chlorination have a huge effect on the taste of tea. 2. ) New kettle, often new kettles take time to lose that 'new' packaging flavour. 3.) Different type of milk, new brand of milk. The varying fat content and composition will alter the taste of tea. 4.) New teapot of cup/mug. Yes even that can alter flavour for a number of reasons, from how pourous the surface is, to a new dishwashing liquid or powder that is leaving a very minimal film on crockery which can alter the taste. 5.) Moving house, new pantry, cupboard or storage box/location can change the flavour of tea if it's not kept in an airtight container from the moment it's opened. Tea is extremely quick to pick up surrounding aromas that will change the taste.