The transcript doesn't directly compare the taste of espresso produced by the E24 and the Classic GT. While it discusses the differences in their features and temperature control, no blind taste test or subjective comparison of the resulting espresso flavor is presented.
This Whole Latte Love video compares three Gaggia semi-automatic espresso machines: the Espresso Evolution, the Classic E24, and the Classic GT. The hosts demonstrate each machine's features, brewing capabilities, and ease of use, aiming to help viewers choose the best model for their needs.
The Gaggia Espresso Evolution is a single-boiler, entry-level machine designed for ease of use with pressurized portafilters. The Gaggia Classic E24 is also a single-boiler machine but features a new brass boiler for improved temperature stability and faster heat-up. The Classic GT is a dual-boiler machine, meaning it has separate boilers for brewing and steaming, allowing simultaneous operation and on-demand steam. The dual boilers in the GT provide more consistent temperatures and faster recovery times between shots compared to the single-boiler machines. Steaming is simpler on the Evolution and Classic E24 due to their simpler single-boiler systems, while the GT offers more precise control over steam temperature and pressure due to its dedicated steam boiler and advanced controls.
Pressurized portafilters, used in the Gaggia Espresso Evolution, simplify espresso making because they require less precise grinding and tamping. The user can even use pre-ground coffee. However, they limit the control over extraction and typically produce less nuanced espresso compared to non-pressurized portafilters. Non-pressurized portafilters, used in the Gaggia Classic E24 and GT, require more skill due to their sensitivity to grind size and tamping technique, but they offer greater control over the extraction process, leading to a potentially more complex and flavorful espresso. The choice depends on user skill level and desired level of espresso quality.
To achieve optimal brewing temperature (around 200°F) on the Gaggia Classic E24, the video demonstrates a technique involving briefly running the brew switch for 5-7 seconds to flush the group head, then waiting for the indicator light to cycle off and back on. This indicates the machine has reached the desired temperature. A slightly longer initial flush (around 6 seconds) may be necessary depending on the machine's heat-up time. The host emphasizes that this technique is crucial for achieving consistent brewing temperatures, particularly with medium roast coffees. Other techniques to adjust the temperature slightly higher or lower can be used depending on the roast level of the coffee.
