Rooibos is NOT Tea! It can be interesting, but I just found it too sickly in the long term.

"Condensed Milk" usually has sugar added as manufactured. It's been available in tubes as well as cans - now you can also get it with coffee added - makes it very convenient when travelling, but its' 'not a cheap way' for a cup of coffee, and you have no idea what grade of coffee it it. In the days when I added sugar to tea, I used the plain version, but now that I prefer tea without sugar, I find that it is too sweet.

One very old trick with Condensed Milk was to put it in a pan of water and boil it - Caramel!!!! It used to be done with the tins, then you just shoveled it into an empty shortcrust pastry pie blank or littlw tart blanks! I also used to do it with the tubes, but now they are plastic, not aluminum. Btw, you can now buy cans of the premade Caramel! You can thus make 'Caramel Coffee' - but it makes for a pretty foul tasting tea! Although some of those bags of 'tea flavours' that have all sorts of soy and wheat extract flavours were around for a while - they were 'interesting' for the first cup or two, but tasted pretty foul and artifical after a while.

"Evaporated Milk" is interesting but the taste is too strong for most teas - it can be OK in a strong coffee - usually it did not have sugar added when made. It too can be 'caramelised', but it has less sugar, so it results in a different style.