Traditional Vietnamese coffee with an optional delicious twist! This recipe is based on what I learned from my parents, who drink it every day, and from my 5 years of experience as a barista.
There are different ways to brew strong coffee: (1) Use the Vietnamese stainless steel filter that sits on top of the glass. Use coarse coffee grinds and be sure to screw in the plunger inside with enough pressure or else you will end up with very weak coffee. (2) A stovetop espresso maker will give you very strong coffee. Again, grinds should be on the coarser side and you should really pack it into the filter for strong coffee. (3) 4 espresso shots from an espresso machine, or to taste. The texture of the grinds varies based on machine and tamping method.
For a delicious summer drink, densely pack a tall glass with crushed ice and pour coffee mixture over ice.