Thanks for the kind words, fellas.
Regarding the lingo,
It is true there is nothing new under the sun. Levers have been being levers since forever, and any machine lacking a 3-way can bloom to your heart's content. What's different is how we are thinking about the application of these techniques and overcoming many of the shortcomings of pump driven, solenoid (or leveta) actuated brew groups. Maybe we can drop the "Rao" and everyone will still know what a blooming shot is.
I don't think he cares either way.
Furthermore, Slayer deserves credit where credit is due regarding their development of flow profiling pre-brew. It's not the same as a lever. It's not the same as line pressure. It's not the same as anything else under the sun. What's special about it is that you can dial in the ramp to full brew pressure simply by matching the water debit to your puck. True, a manual lever can raise the brew pressure any way they please, but Slayer developed an innovative way to have a completely passive adjustment that mimics a very specific and gradual application of pressure to the lever. That's not nothing. Now, Lelit, and a little group of bandits have taken it to the next logical level and I couldn't be more pleased with the results.
Regarding machine differences and replication of techniques,
Yep, they're all a bit different. One of things I've taken great pride in throughout this thread is the lack of absolutes. There's no "do this or that" type of discussion occurring here. It's about the fundamentals of why
certain phenomena impact the extraction in certain ways. By discussing things in these terms, we can develop a set of expectations relative to what strategies achieve certain characteristics in the final beverage. Again, there is nothing new under the sun, and adjusting taste by grind and dose still reigns supreme in many ways, but I think we now have an ability to augment the rules by throwing water debit in the mix. No longer must you dose low to grind fine. Now you can dose high, grind fine, and preinfuse slow with a pump machine.
Not saying you should. But you can.
Bunkmil wrote:In your last video it was like a 30s step at about 1.5ml/s. I am pretty sure that this isn't your max flowrate right?
It is not.
I just pulled two shots this morning and took video to compare. One at 4.5ml/s at line pressure and the other at 7.5ml/s using the pump. I can hit 12ml/s but I was concerned about being able to stop the flow in time to actually bloom without dribbling all over the place... 4ml/s:7.5ml/s:
I haven't done too much analysis of these but here they are. Interesting that the pump-soaked shot flowed faster than one soaked slower at line pressure. That was unexpected.