The transcript states that the EK Omnia and the PK100 showed similar results, with extraction times ranging from 10 seconds to 100 seconds. This is presented as the largest range observed among the grinders tested.
This video explores the impact of different grinders on espresso extraction time using a consistent coffee and recipe. Lance Hedrick tests four grinders—a Niche Zero, Breville Smart Grinder Pro, a modified Compact PK100, and an EK Omnia—at a fixed burr gap, noting the time it takes to pull shots with various coffees. The goal is to demonstrate how grinder type affects ease of dialing in and the resulting espresso characteristics.
The provided transcript focuses primarily on the time it took for each shot to extract, not on detailed descriptions of taste and texture differences. While Lance mentions that grinders with a tighter, more unimodal particle size distribution can produce a "more pointed shot of espresso" and that a wider distribution might result in a "more rough texture," he doesn't provide specific tasting notes for each grinder and coffee combination. Therefore, a complete answer to your question is not available in the transcript.
Lance Hedrick advises home baristas to:
Identify a "fixed gap": Find a grind setting on their grinder that produces a consistently good-tasting shot with a favorite, familiar coffee. Note this setting.
Test new coffees at the fixed gap: When trying a new coffee, pull a single shot at the established "fixed gap" setting. Note the extraction time.
Adjust based on extraction time: Compare the new coffee's extraction time to the usual time for the familiar coffee. If the new coffee takes significantly longer, adjust the grind finer. If it's much faster, adjust the grind coarser. This provides a starting point for dialing in the new coffee, reducing wasted shots.
Keep notes: Maintain a record of your findings (coffee type, roast level, grind setting, extraction time) to build a reference point for future coffees.
