Light Roast Just Wants to Be Acidic

In this episode, I walk through a water chemistry experiment I ran on a light roast Kenyan coffee I roasted myself. For a long time, I've been playing this game of trying to coax sweetness out of light roast by pulling every lever available. I've swapped brewers, played with paper filters, dialed down temperature, and manipulated water chemistry. This time, I took it further. I tested three water profiles side by side on the same coffee: distilled, acidic, and a sweet-profile build. The distilled version was flat and unremarkable. The acidic version was lively, expressive, and the one I couldn't stop going back to. The sweet profile worked almost too well. Chocolatey, sweet, and completely stripped of everything that made the coffee interesting. The acidity was gone. The personality was gone. I realized I'd gone too far, and that realization opened up a bigger question about what we're actually doing when we manipulate coffee.

The deeper conversation in this episode is about losing sight of the coffee itself in the middle of all the tools, gear, and variables we use. I'm talking about the moment when the experimentation stops being in service of the coffee and starts being about winning an argument with it. By listening to this episode, you'll hear how one experiment shifted the way I think about light roast and why I'm starting to believe the acidity was never the problem to fix. You'll also come away with a genuine question to sit with the next time you brew: are you working with the coffee, or are you trying to change what it fundamentally is?

Transcript

[0:00] I keep trying to fix light roast. What if the acidity was never the problem? What if that was the whole point?

[0:12] I've been playing this game for a very long time — trying to find sweetness in light roast. I know it's there. It really is there. But I was trying to play God. I was trying to change a coffee that I don't naturally get down with. I was trying to manipulate it, give it more balance, bring sweetness to the cup.

[0:53] Anything and everything. I would change the brewer. I would manipulate it through paper filters. I would play around with temperature. Lower temperature really does help when you're trying to sweeten things up. And of course, water. Water is the ultimate factor. You can do whatever you want with it. It's almost like cheating. You dial in a profile, put the coffee in, and suddenly it's a totally different cup.

[1:36] That's what I experienced with this particular coffee. One coffee. A light roast Kenyan I roasted weeks ago. When I ran this experiment, I wanted to see if a sweet water profile would actually work. I didn't want to go back to the drawing board. I just wanted to see the coffee for what it is — and hopefully start to actually enjoy light roast.

[2:13] Some people taste sweetness in light roast naturally. I really can't. There have been times where I have, but that was a long time ago. So I tried it. An acidic profile and a sweet profile. Same coffee. I probably should have blended the two to find a middle ground, but that's a story for another experiment.

[2:45] First, I tasted the distilled version. Flat. There wasn't much there. It tasted like the coffee, technically, but it was just okay.

[3:08] Then I tried the acidic version. It was lively. It was tasty. It was something I'm growing accustomed to — slowly understanding and accepting that this is what light roast is.

[3:25] Then I tried the sweet profile. It was chocolatey. Super sweet. But it was dull. It was boring. It had no personality. The acidity was completely muted.

[3:43] I was shocked by how well the sweet profile actually worked. And then I thought about the coffee I had in the distilled version and the acidic version, and I knew I had messed up. I really did. I went too far. It wasn't the same coffee anymore.

[4:10] Yes, that's what we do with coffee. We manipulate it no matter what. Even when we're not trying, we're changing it. Either toward our preferences, toward what the coffee is calling for, or just because we know what we're doing. But there's such a thing as too much of a good thing. This was it.

[4:41] After I finished that session and kept sipping, I kept going back to the acidic version. It was livelier. It pronounced more of that acidity. I couldn't pick everything out exactly — maybe that's me needing to develop a more mature palate — but I knew it was better. It was more interesting. It started to sing and talk to me in ways the other versions never did, especially the over-manipulated sweet one.

[5:34] It was tasty. It was something I wanted to keep drinking. Even without the sweetness or the balance I'd always pushed for, it was the right cup. And to be clear — caveat — this is one experiment on one coffee. Maybe with a different coffee, the sweet profile would win. I can't say. I'm talking about this specific situation and what it made me feel and what it started to teach me.

[6:11] It made me think: maybe I'm doing this wrong. Maybe I need to step back and pay attention to the coffee. See what it tells me. And even if I don't like what it's saying, that's perfectly fine.

[6:41] That's the thing about all of this. We have pour overs, flat beds, conicals. We have water chemistry packages, third-wave packets, spring water experiments, temperature-controlled kettles. All the ways to manipulate coffee. And then we lose sight of the coffee. I'm mostly talking about myself here, but also things I've seen and read. Seldom is the conversation actually about the coffee. About the natural feeling of it. About what it's doing when we're just brewing.

[8:02] A lot of times I'm thinking about the gear. The water. The kettle. Watching the pour. Looking at the bed. And if I'm smelling the coffee, I'm thinking about everything but the coffee. If that coffee wants to be brewed in a way that honors how it was roasted, why am I fighting that?

[8:48] It's always about the coffee. This is one experiment and I'll keep running more. I'll keep trying things. But what I'm really saying is: we're doing all these things trying to enjoy this beverage as much as we can, and that coffee just wants to be acidic. Which is perfectly fine. I've matured enough to see the beauty in that.

[9:29] I just have to let it talk to me more. Brew it. Drink it. Think about it. Keep doing that. Keep trying to understand it. Talk about what I don't like, talk about what I do like. Work toward actually knowing that coffee.

[10:03] I had no idea this was going to happen. You never know where this goes when you push through, ask yourself questions, listen to what other people are seeing in their own cups. You start to realize we're just trying to enjoy the coffee for what it is. We should be.

[10:46] When we keep playing God with manipulation, we're going to keep losing sight of that. We're going to keep buying more gear. We're going to keep saying what's wrong with this coffee, why am I not getting the notes. Instead of just appreciating it for what it is. Because it's talking to us every single time we drink it. Beyond the tasting notes, beyond what we think it's doing — it's telling us something. Telling us we're in the middle of an experience that may or may not be magical.

[11:35] And in the case of light roast, it's in its nature to be acidic. It's in its nature to be lively, to be expressive. Whether that comes through an acidic profile water or a faster filter that opens up more brightness and complexity — those are the ways it talks to you. Those are the things worth paying attention to.

[12:20] When we really know that and understand it and accept it, light roast isn't so terrible. Maybe I've been thinking about balance wrong this whole time. Maybe medium and dark roast just make balance easier to find because of their nature. Maybe I just need to let light roast be what it is. Explore it on its own terms. That doesn't mean I'll love it — it just means I'll have a different appreciation for it. Less resistance.

[13:01] Name what you like. Name what you don't. Then move on and find another coffee.

[13:13] It's about the coffee's natural state. Exploring that and letting it be what it is. When we do that, maybe we'll find it was always about the coffee — not the gear, not the accessories, not the manipulation. And the gear is fun, don't get me wrong. It really is. But it's about the coffee. In this case, the acidic nature, the one-dimensional-seeming-but-actually-complex curiosity of light roast. I'm slowly coming around to it. It's still not my favorite. And that's perfectly fine. What about you?

[14:11] Have you noticed light roast keeps doing the same thing to you? Have you stopped and paid attention to the point where you thought, wait — maybe that's the point? Is it acidic? What kind of acidity? Is it soft? Does it linger? Does it fade? Is it a faint apple acidity like a Gala or a Fuji? Does it read more like lemonade? Grapefruit? Explore it that way. Describe it. Name it. That's where the essence of the coffee lives, in that acidity — even if it is one-sided. Let me know what you think. Talk later.