Oxidized tea base in drinks: how I detected it

I had to resolve it with the team working on top of me at a beverage shop with irregular hourly sales. The problem was that some drinks came out darker and with a flat taste at the end of the shift. At first, it didn't seem serious, but in a real work environment, that kind of detail can affect timing, costs, or customer trust. It worked for me to divide the problem into small parts. I reviewed…