请帮我把以下文本总结成3句话以内：
Espresso Ideally, a single shot should be compact with a distinct top, it might need to be finished with a thin layer of cream. We strongly suggest refraining from connoisseur pressure, it limits the brewing flexibility and general output rate. Always be sure to match the equipment to your desired water volume.
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1. 一杯理想的手动浓缩咖啡应具有紧凑的顶部和薄层奶油。2. 专家们建议避免设定固定压力，以保持冲泡的灵活性和输出效果。3. 确保使用与期望水容量相匹配的设备非常重要。
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