What is the required SRM range for English Porter beers?

The required SRM range for English Porter beers is 20-30. The Standard Reference Method (SRM) is a scale used to measure the color of beer, and for English Porters, this specific range indicates a deep brown to black color, which is characteristic of this style. The darker hues in Porters often arise from the use of dark malts, such as chocolate or black malts, which contribute both to the color and the rich, roasted flavors found in these beers. This SRM range is critical for identifying the style and maintaining the expected visual and sensory profile that defines English Porters. Other options fall outside the recognized color range for this style, reflecting lighter or darker characteristics that do not align with the traditional English Porter appearance.