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zerofuckingwaste · 5 months

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Easy zero waste tip no. 6: Find out what caffeinated beverage you actually want/need, then learn how to make it; aka "The Starbucks Lie"

Tl;Dr: You may be misinformed about how coffee actually works, leading you to purchase beverages that you may not actually like, that may not serve the purpose you want them to serve, and you can save money (and the environment!) by learning to make something you'll actually like at home.

Last week, I went to Starbucks to get a pumpkin chai latte, because I'm not perfect and needed to fulfill a craving on a bad day- but at least I used a reusable cup. Anyhow, while I was there, I witnessed the following conversation, not for the first time, nor the last, which I'm sure is commonplace:

Barista: What can I get you?

Customer: Do you have a dark roast? I like my coffee dark.

B: We just have a medium roast ready, but I can do a dark roast pourover.

C: Nah, that's not going to be enough caffeine for me, and I need drip coffee, not anything fancy. I'll have an Americano, then- espresso beans should be high enough in caffeine!

Now, if this seems like a reasonable exchange, that's ok- you're likely not a trained barista, and even if you are, there's a chance your training was at least a little bit wrong. Let's walk through it point by point, to explain why this exchange made me want to tear my hair out of my head.

"I like my coffee dark!" Most likely, this is false- studies have shown that people are most likely to say they want dark coffee, when they actually most enjoy a lighter or medium roast. Darker roasts are bitter, partially due to having more tannins- which is why they can cause more side effects, like headaches and digestive issues.

"Not enough caffeine" In fact, the longer (darker) you roast coffee, the more caffeine it loses. If you want a highly caffeinated beverage, you should opt for the lightest roast available.

"I need drip coffee, not anything fancy (pourover)" Pourover is essentially a method of making drip coffee one cup at a time. No machine or anything, it's the least fancy coffee option possible.

"Espresso beans should have high enough caffeine" The beans used for espresso are the same as the beans used for the drip coffee- they're just ground more finely before going through the machine.

"An Americano [...] should have enough caffeine" An Americano is a double shot with hot water, about 160 mg of caffeine if you're getting a 'grande'. A drip coffee that same size is over 300 mg.

This man claimed to love coffee, but didn't understand anything about it, leading him to pay $4.39 for 160 mg of caffeine instead of $3.28 for almost double that- keeping in mind that number could easily have been doubled again had he opted for the lighter roast. So, let's fix that.

1. Light or Dark Roast?

Have you ever wondered why Starbucks has a medium roast, the Pike Place, as their go to roast all the time? It's because it's the most middle of the road, bland option, completely inoffensive- not very good, but also, not too bad. It's a blend from a bunch of places, so there's no overwhelming flavor besides coffee with a slight hint of being burned. That burn taste everyone complains about, btw, is a result of the roast being too dark for them, hello tannins!

A lot of things happen to coffee as you roast it. Let's go through each point one by one:

The color changes. The darker the roast, the darker the roast- literally. This is best gauged with ground coffee, where you can see the average of the whole bean, not just the outer shell.

The mass decreases due to a loss of moisture. However, the bean actually expands in volume due to the strength of the cell walls. In essence, the density decreases.

Oils seep out from inside of the beans, coating them, and protecting volatile chemical compounds that give them flavor.

The caffeine content is lessened the longer you roast.

With high heat, the Maillard reaction occurs. While this reaction is responsible for the lovely color and the viscous, dark flavor notes, it's also responsible for breaking down the citric and tartaric acid, which causes the sweet and fruity flavors to dissipate. It also breaks down chlorogenic acid, creating caffeic acid and quinic acid, aka bitter, bitter tastes.

High heat also causes caramelization of sugars- but at a certain point, those sugars start to burn away.

Taking all this into consideration, we can begin to figure out what kinds of coffee you'll actually like. One quick note: always get single origin coffees. Each region has its own flavors, and if you're only getting coffee from one spot in your cup, then those notes will be amplified for your enjoyment.

A dark roast will have less caffeine, a stronger coffee bitterness, and very simple, up front flavors: chocolate, nuts, smoke, wood, etc. (My favorite tastes like dark chocolate with a hint of hickory)

A light roast will have more caffeine, a lesser amount of bitterness, and very complex, more nuanced flavors: citrus, caramels, fruits, florals, etc. (My favorite tastes like blueberries and white chocolate, with notes of almonds)

No two coffees are alike. My recommendation is that you purchase a bag of whole beans from your favorite local cafe or roaster based on your caffeine needs, and try out different beans until you find one- or two, or five, or a dozen- that you really love.

One quick note- a much, much greater flavor difference can be found in aerobic v. anaerobic roasted beans. I recommend reading into this process on your own, it's fascinating- both of my favorite coffees are anaerobic roasts, as it happens.

2. How should I make my coffee?

I'm a big fan of the affogato. I'm a dessert for breakfast kind of gal, so it makes sense; a hefty double shot over a scoop of ice cream. Absolutely divine; I pretty much only do espresso for myself, although my partner greatly prefers French press.

The overall rule for caffeine in your coffee is that the finer the grind, the more caffeine you're going to get out of the bean. That being said, that doesn't mean the final product will actually have more caffeine than another method, as different ways of making coffee require different amounts of coffee grounds. Keep the ratio of grounds to water in mind for this reason. However, you must remember that the perceived strength of the beverage- the concentration of flavors- is not necessarily correlated to the amount of caffeine. I'll now go over a few methods of making coffee which can be 100% zero waste (assuming you compost those coffee grounds!).

Cold Brew- You either let grounds freely float in water, or let them steep inside of a little filter bag. Let it rest overnight, up to 48 hours. If you like your coffee cold, and not a lot of effort, this might be your best bet.

Pourover- You put grounds into a little filter over either your cup or a pitcher. Pour water over the filter and let it drip down. If you like having a calming morning ritual, this might be for you. Essentially the same as drip coffee, except you don't have to care about a machine.

French press- You put grounds in the bottom of the press, then fill with hot water, and let it steep for a few minutes, then press the grounds down. If you don't mind a little work every morning, waiting a few minutes (when you could prep your breakfast, perhaps) then give this a go.

Moka pot- You pour water into the base, then put grounds into the basket, then screw on the top. Place on the stovetop, and remove as soon as the coffee begins to come out of the spout within. If you like a strong cup but don't want to invest in espresso, this is a great option. The pressure is too low for it to be true espresso, but it's very good.

Manual espresso- This is a bit more complex. It will be the same as automatic espresso, except there's no chance of the machine failing for any electronic reason. You fill a little basket with grounds, then tamp them down. Water is brought to temperature, then pressed through the espresso at a relatively high psi. If you want espresso, this is the way. You can get an entry level (Flair makes several that are fantastic) or you can get something high end with a built in boiler (I have a La Pavoni with an attached steam wand, great purchase).

Automatic espresso- Essentially the same as manual, but the machine does the pressing for you. If you love espresso but don't want to do a lot of work for it, this is a great investment! If you can buy used, do- just make sure the brand is one that offers replacement parts.

There are plenty of other options, but these are a good place to get started, when figuring out what works for you.

3. Why do I want my coffee?

Are you looking for a caffeine boost to get through a rough workday? Do you want something sweet to accompany your breakfast? Are you just bored?

Figure out why you want your coffee, then tailor your morning experience to your needs. If you need a caffeine boost for a rough workday, maybe don't do anything time consuming- prepare a middle of the road medium roast cold brew for the week on Sunday, and go ahead and grab a glass in your hurry out the door each morning. If you want something sweet with breakfast, get a light roast and a French press, and make it part of the routine for the meal. If you're bored, do pourover with a dark roast into a funky mug, or learn to steam milk to make latte art.

Really, coffee is something lovely, that you should enjoy, without mindlessly spending money on something that's not even good. As a bonus, you can support local businesses (coffee roasters and cafes), develop a new skill, and better the environment.

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