Steel Mill Coffee Co.
Sumatra
Sumatra
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Flavor Profile:
Earthy and bold with notes of sweet pepper and light grapefruit. Rich body, smooth finish, and low acidity make this a favorite for those who love deep, complex coffee without bitterness.
Origin:
Sourced from the highlands of Indonesia, our Sumatra beans are grown in volcanic soil for naturally rich flavor and depth.
Roast Level:
Dark Roast – smoky, smooth, and satisfying.
What You’re Getting:
✔ 100% Arabica Coffee
✔ Fair Trade & Organic
✔ Vegan, gluten-free, sugar-free, and dairy-free
✔ No chemicals or artificial additives—just coffee
Why Steel Mill Coffee Co.?
We’re a small-batch family-owned business built from the ground up. We started in a Midwest cafe with one goal—bring better coffee to more people. We source direct from growers when possible, roast every batch with intention, and pack each order by hand to ensure peak freshness.
No middlemen. No shortcuts. Just good coffee.
Available in:
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12oz, 2lb, and 5lb resealable bags
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Whole Bean, Ground, or Coarse
Shipping Perks:
FREE shipping on orders $45+
Fast delivery from roaster to doorstep
Taste coffee with a backbone.
Our Sumatra Dark Roast is made for early risers, late-nighters, and anyone who doesn’t want to settle for average. It's bold without bitterness, smooth without sweeteners, and as tough and satisfying as a steel mill shift.
FAQs
How much caffeine is in your coffee?
On average there is around 95mg of caffeine in a cup of coffee regardless of the brewing method. In short, a 250ml brewed coffee and a 30ml cup of espresso have the same amount of caffeine even though their concentration levels are different.
Does dark roast have more caffeine than light roast?
Although dark roast tastes stronger, contrary to popular belief, it does not contain more caffeine! Oh, my!
Some argue that light roast preserves more of the caffeine because it is roasted for less time. The truth is both roast levels have more or less the same amount of caffeine. Neither gets roasted at a high enough temperature to alter the caffeine content! So don’t worry about it and just enjoy the roast you like best! Our coffee is pure and will wake you up no matter what!
How long does your coffee sit on the shelf before you ship it?
It doesn’t! That’s what we take pride in! You order it and we then hand-pack and ship right away. You are getting the freshest coffee possible. No sitting in a warehouse or on a store shelf. Only fresh pure coffee.
Is your coffee bitter?
Bitter coffee comes down to two things.
- Bad beans
- Bad brewing (over brewing)
All coffee has bitter elements. Robusta beans will taste more bitter (we use Arabica which has a better flavor profile so not to worry).
If you are over brewing your coffee, you will extract more bitterness in your cup no matter what bean type you have. If you buy our coffee “ground” for a standard brewer, we will grind them to the perfect size to avoid over extraction.
Our beans are of the highest quality and do not have much bitterness to them. If you are noticing your beans tasting a bit bitter, try using less grounds in your filter so that the water runs through quicker. It’s usually minor adjustments that can fix this common problem!