Black brewed coffee is cheap but can be disappointing. One former barista thinks the black coffee can taste a little burnt. idiltoffolo/ShutterstockFormer Starbucks barista Danielle Damrell told BI that simple brewed coffee is one of the most popular orders, but it's not always the most delicious. In her opinion, Starbucks over-roasts its coffee beans, giving it a "highly acidic, burned taste." "It's the cheapest thing on the menu for a reason," she added.

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Persons: Danielle Damrell, it's