The most well-known TEA we have here is Teh Tarik, which is basically black tea with sweetened condensed milk. This is my favourite style of tea, though I usually prefer a mixture of unsweetened evaporated milk and sweetened condensed milk.
In Singpaore and Malaysia, the tea is usually brewed with the use of black tea dust from BOH Tea or Lipton, though my favourite blend of tea dust is Ipoh Chang Jiang Serbuk Teh.
Do take note to make the tea extra gao (concentrated) to balance out the water content from the milk, or else the milk tea will end up tasting bland. If using tea dust, 8-10g of tea dust, with 240ml of water at 90°C, is sufficient for one cup of gao tea to make milk tea.
I had tried experimenting making SEA-style milk tea with using other kinds of tea:
Made from whisking matcha powder in small amounts of water, then mixed with foamed hot milk. My rough measurements for a perfect cup of matcha latte: