I know what durian is, but I've never heard of it in a shake! Anyway, this thread sent me off browsing, and I found this recipe:
www.1st-milkshake-n-smoothie-recipes.com/creamycoffeesmoothie.html
Creamy Coffee Smoothie3 tablespoons instant coffee
1/2 cup sugar
1 cup milk
1 cup heavy cream
6 ice cubes
2 tablespoons vanilla extract
Directions
Combine all ingredients in blender and blend on high until desired thickness.
I don't think this is a smoothie--I think it's a shake. On the other hand, I think milkshakes should contain ice cream. Anyway, thought some of you might enjoy the recipe.