Your argument is "I dare you; you won't notice a difference." That's not convincing. Those of us who've spent time in the industry can even detect differences between high end conical vs flat burr grinders, let alone the difference between a bladed spice grinder compared to a burr grinder.
There are substantial differences to be found in many variables of coffee brewing. Just because you don't have a palate for it doesn't mean others don't.
Are you aware of any blind tests done on this? I'm fully aware that I can taste the difference between my Specialita and a blade grinder.
What I'm less convinced by is that more and more expensive grinders taste better to any noticeable and consistent degree. Personally I'd say that the taste changes day by day, maybe according to my mood, whether I brushed my teeth or ate something sweet in the last hour or two, the humidity, bean freshness, whether any defect beans got into a particular cup, and probably a ton of other factors.
I'm willing to accept that my tastes are not developed enough. But I need real double blind tests to back that up, not just people saying I should trust them because they claim to be an expert. Are there any?
Yes. Check out James Hoffman on YouTube. He tests many machines, including grinders, using double blind taste tests, and he can reliably tell the difference between many machines.
Though keep in mind that his palate is especially refined. Average Joe buying a coffee at Baskin Robbins isn't going to notice the difference between different high end grinders.
I meant by real scientists in a lab, not a YouTuber. Like a consumer testing lab maybe, or a university.
Besides, I've watched a good few Hoffman videos - including his high end grinder reviews - and while they are great, they aren't scientific standard double blind tests. They're just him in his kitchen.
I did search in case I missed anything, but can't find any videos that you might mean. If you have a specific video in mind, please link it.
> I meant by real scientists in a lab, not a YouTuber. Like a consumer testing lab maybe, or a university.
Maybe look more into who he actually is before dismissing him? He's a National Barista Championship winner and has decades of professional coffee experience and knowledge beyond just brewing a daily cup. He also co-founded a roasting company that became the largest wholesale specialty coffee supplier in London. It's not like he just popped onto Youtube one day in 2016 and decided to start making coffee videos.
It doesnt need to be convincing - I’m not the one making the claim that $200 coffee grinders make better coffee, so I’m not responsible for backing up that fact with data.
There are substantial differences to be found in many variables of coffee brewing. Just because you don't have a palate for it doesn't mean others don't.