How do I brew Vietnamese Coffee without it tasting too watered down? I'm using a phin filter, but I can't get the coffee to be strong as I typically get at the restaurants. I tried applying more pressure to the coffee grounds to slow down the drip and less finely ground coffee.
I suggest changing your coffee brand, some coffee powder are more or less thin and therefore, making your coffee more or less strong.
One easy to find brand I find really good to make a strong coffee is the Illy classico.
I also suggest wetting a little the coffee powder before applying a very gentle pressure with the metal plate with the holes