I like mine quite milky, or a little less if I use condensed milk. This will sound awful to some, but I keep my tea bag in to steep instead of taking it out. Boom, a perfect mug of tea.

Texturally, most people would find this gross, hence, milk first so it has more uniform contact with the tea, avoiding this issue. This process is harder to do with tea bags, though (although ...

But if you add hot water to cold milk and a tea bag, this lowers the temperature considerably and stops those flavours from being released. So milk first if using a teapot, but last if you’re ...