Coffee expert Ricardo Oteros reveals that common home brewing mistakes aren’t necessarily about the coffee itself, but rather the water used and its temperature. Oteros, a coffee taster, explains the intricacies of coffee evaluation and highlights pitfalls even those purchasing high-quality beans encounter. He emphasizes that achieving a great cup at home hinges on paying attention to water quality and ensuring it reaches the optimal temperature. The specialist offers guidance on what consumers should consider when selecting the best coffee without needing to become experts. Oteros' insights bridge the gap between professional coffee tasting and the everyday consumer's brewing experience, simplifying the pursuit of a perfect cup. His advice centers on mastering the fundamentals beyond simply buying good coffee beans.