What's the ingredients to a Red Bean Shake?

Question

This asian drink is commonly sold in asian restaurants (mostly viet)

only ingredient I know is

red beans
condensed milk
and ice

what else am I missing?
I just got a blender :)

Answer 1

Um... that's it dude. You don't blend it though - you put the condensed milk at the bottom of a tall glass, put in a few scoops of ice, and then top it with red bean (I mix it with green bean too). The condensed milk should have enough flavour. Mix it with a SPOON.

Answer 2

But you need to boil the red bean first to soften them a bit. I have never made it myself but I have had a lot of red bean desserts before. And my guess is you have to boil the red beans with rock sugar until the red beans are softened. Then cool it down and refrigerate it. Once it's cold you could spoon it into a glass, and add condensed milk and ice. That's it!