We've been drinking a couple of bags from local roasters (beans - ignore the bags marked 'plunger & filter' below), kindly gifted to me .
200g of L'Affare Gusto (Intense & Chocolatey - tasting notes "Black Forest Chocolate") which I got dialled-in quickly, and found it consistent and enjoyable, though not as much fun as our mainstay, Havana Coffee Works '
Super Deluxe'. Quite the chocolate hit, decent body and mouth feel, though missing the complexity and character of Super Deluxe.
I changed to the 26E basket from the 24E basket from IMS on Saturday morning. Same number of holes, deeper basket, so my tamped 18.0g shot is further away from the shower screen. Minor improvement noted.
I changed over at the end of the Gusto bag on Sunday arvo to 500g of L'Affare Primo (Big & Bold - tasting notes "Molasses, Marmalade, Shortbread'). Much bigger hit, I certainly get the marmalade (bitter citrus marmalade and smokey dark molasses), it was running about 32 seconds, made a mental note to grind looser.
On Monday morning (after our first morning coffee), I removed the shower screen and seal. The round ring end of a 12mm ring and open-ended spanner is *ideal* for removing an e61 Shower Screen, no sharp edges from picks or screwdrivers. Easy! The screen was very clean (weekly backflush with espresso salts working well). I replaced the screen with an IMS Precision Nano-Coated shower screen and 8mm silicone seal, applying a thin film of food-safe silicone grease. Easy to reinstall and seat with an empty portafilter. The silicone seal is a joy, softer and 'clocks' the portafilter into a 6pm position (it was 7pm before); nice! Less struggle than the rubber one, and less wear on the group head slots and nubs on the portafilter. It runs water much better-disributed water than the factory mesh. Pressure gauge the same - 9 bar smack in the centre of the green band on the gauge, no portafilter.
Now the shots... I need to #grindcoarser! Same grind, same prep & tamp, shots run to 38 seconds for 36-37g out, and start running at 9 seconds compared with 5 sec to start and 30-32 sec to pull 36-37g with the original screen, same pump pressure on gauge. Tastes pretty good, very different to how it tasted on Sunday and Monday morning - more colour, more intensity. I've brewed seven times since then, and found it very consistent... so tomorrow I'll grind coarser and see where it takes me flavour-wise getting back to ~28 seconds. 500g bag gives plenty to play with, it'll probably last till Monday or Tuesday next week.