Introduction of Hakka-Life Six Ridges Dripper
When you see the ribs design of SRD, does it remind you something? It is pretty similar to Kono Classic, and their ribs are both length 1/2 of dripper. (Trivia: There are three generation of Kono Dripper, 1st gen is Kono Classic MD-21, 2nd gen is Kono Meimon MDN-21, 3rd gen is Kono “since 1925” MDK-21. Main difference is the length of ribs, MD>MDN>MDK.) But SRD reduce the number of ribs to six. According to the manufacturer, the flow rate of SRD is a bit slower than MDN but faster than MDK. I don’t have experience on Kono Dripper so I can’t say it for sure, but we can still see reducing the number of ribs does slow down the flow rate. Base on this ribs design, the filter will stick tightly with the top half of the dripper wall which means less water can escape from the side. On the other hand, water need to pass through the bottom half of dripper and hot air can’t release from the ribs, that makes SRD has a pretty slow flow rate. In conclusion, SRD can be used to get a high extraction rate easier, but it also has a higher possibility to clog and get a “muddy” flavour if we don’t know how to use it.
According to my previous experience, the flow rate becomes slower when the water level gets higher than the ribs, and on that situation, the water level is usually higher than coffee bed too. That makes coffee ground stay in an immersing situation for long. If you don’t like that, try to grind coarser and use pour & pause method. Stop pouring when the water level reach coffee bed and start the next pour when water in dripper drawn down. This way you can get a clean and layered flavour without worrying about the clogging, at least it works for me.
P.S. Not recommend getting this dripper as your first dripper.