Question: what kind of coffee do you use in the ninja coffee bar?
Answer: Medium grind. Darker roasts like French roast or espresso roast (not espresso grind, which is too fine) for milk-based drinks. Full-bodied, medium-dark coffees for iced or blended beverages. Light-to-medium for your average cup of coffee or café forte, unless you already know you prefer the darkest roasts for this, too.