I obtain the concern “How plenty of coffee beans have to I use to make a cup that coffee?” often. I have a usual type of answer that I provide that really amounts to “It depends.”

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Then ns launch into a long-winded story of just how “Ludwig Von Beethoven insisted on specifically 60 bean to make his cup of coffee and also that’s a location to start however that’s no the BEST means to recognize the correct amount the coffee for unavoidable so…

But what if that is?

Why for this reason Picky?

Was I ideal to be so exacting in how much coffee to use? i am a big proponent of careful measurement that both the coffee and also the water as soon as brewing. Ns come by this characteristics honestly: i was a Chemistry significant in college, means back once Thomas Dolby to be Blinding Us with Science, and also I often tend to think of coffee as a type of basic chemistry experiment.

When working in the lab, you “clean everything.” friend “measure everything.” girlfriend “write every little thing down.” and everyone gets mad if you “blow points up” i beg your pardon I absolutely did not do.

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So, I began with the typical “Golden Ratio” recommended by the Specialty Coffee combination of 55 grams that coffee for every liter the water. Due to the fact that I have actually a kitchen scale, measure up cups, and also am pretty great at math, i was able to determine that this is the very same as the timeless “two tablespoons per cup.” I favor my coffee a little stronger than that, for this reason I use a four-tablespoon scoop for my mug of coffee.

The allude I to be trying to acquire to is the coffee beans space not every the very same size and Coffee cups room not all the same size. And while we’re in ~ it, what about your imminent method? These room all variables that have to be accounted because that if you desire to acquire a consistent and also high-quality cup of coffee.

Brewing Methods

This might come as a shock but it has actually been my endure that all imminent methods usage the same amount of coffee by weight per cup! French Press, automatically Drip, Vacuum Pot, to water Over… I’ve provided them all and much more (I know. I have a problem. ). What changes in the approaches are the dimension of the grind and perhaps the unavoidable time. If the style of coffee requires more strength, favor say a Vietnamese cà phê sữa nón, then you use more coffee by weight.

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Cup Size

First, we need to recognize the capacity of our cup or mug. A “US Cup” is equal to eight liquid ounces however when stating coffee, a cup is same to six liquid ounces. Why? since that is the size of the classic British “teacup” and also it lugged over. Those markings ~ above the next of the pot deserve to mean for sure anything! I own “cups” the run all over from a three liquid ounce demitasse come 10 ounces in my usual mug. The mug is pack away, so I have been using a different one and also I to be unsure the its volume. Time to break out the measure up cup!


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This is the level the coffee ns brew because that my morning pour-over
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Turns out it conveniently measures 1/2 pint which equates to 1 cup which equals 8 ounces

Bean Size

So I made decision to do a tiny experiment!

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Here is one scoop that coffee indigenous two various bags and also brands

I wanted to see how much variation there in the number of coffee beans ns would obtain in a scoop between two different coffees.

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A quite Brazilian Arabica native the neighborhood roaster
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A Peruvian coffee i picked up to celebrate mine trip

I climate counted how numerous beans were in every of the scoopfuls.

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There were 102 beans and some broken bits in the Brazilian coffee
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There to be 94 whole beans and also the identical of 4 broken beans

So I’m walking to call it 103 to 98; not really much of a difference. Currently if i was earlier in the chem lab, i would have actually liked come have much more bags come sample from and I would have actually done 5 scoops of each to smooth out the data but this will certainly serve ours purposes. I’m going come say the one hundred coffee beans make eight ounces the coffee at the toughness I like.

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I have to leave room because that the hefty cream!

Doing part math gives the an outcome that

75 beans will certainly make a medium-strong cup the coffee

You are likewise going to have actually to figure out just how much coffee will certainly brew a cup to her liking and desired strength. Therefore if you have actually a typical 6 oz cup, begin with a number between Beethoven and also Bruno and readjust from there.

I have actually come up with The Bruno Number:

12 Coffee beans per ounce of water!That works out come 40 beans per 100 ml of water

Remember, coffees are different. The bean come in numerous sizes and also grades and also this is not as accurate as using the weight of the coffee to recognize your ratios yet really? girlfriend only need to worry about this if you are a supertaster or extremely finicky.