When I make it at home, I fill a coffee mug with hot water and one tea bag and leave it on the counter while I am having my morning coffee. Then I pour it into my tea mug (32 oz mug), refill the coffee mug with cool water and swish it a bit to get more tea from the bag, and pour that into my tea mug, then fill the rest of the way with ice and cold water. As soon as I do, I put another tea bag into the coffee mug and refill with hot water to start the next one.
I like my iced tea without sugar or sweetener, so I don't worry about drinking it all day after my morning coffee. In the summer I love making peppermint tea, or a fruity blueberry, raspberry.. etc.. iced tea.
I've never found an instant or bottled tea I like, even in the States. I rarely bought it out because it was either weak, too strong, too sugary or tasted like they hadn't washed and aired the urn properly. Subway's Fuze tea (unsweetened) is pretty good. I used to drink the heck out of it when I managed a Subway.