If you know the amount of coffee powder, multiplied by the coefficient 21.33, you know how many ounces of water you need (0.046875 is the inverse coefficient), multiplied by the coefficient 22.2593, you get how many milliliters of water you need (0.04493 is the inverse coefficient).
Comparing the two tables, it is not difficult to find that the so-called brewing of enthusiasts is just a little higher in concentration and heavier in taste. Simple and simple words: one serving of powder, about 16 parts of water.
The picture below is the coffee brewing rate chart of SCAA, which looks a little confused.
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