Handbrew coffee correct water powder ratio coffee extraction: water powder ratio control table

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Coffee extraction: the argument about the ideal extraction rate and concentration of coffee, what is the ratio of water to powder of hand-brewed coffee in order to achieve the best extraction concentration and fall in the "IDEAL" region of SCAA?

Take the 55g extraction ratio line (through the largest proportion line in the IDEAL region), this gouache ratio line (Brewing Ratio: Grams per Liter) tells us that 55g coffee powder brewing 1000cc coffee will fall in the perfect extraction zone; but if you just want to brew 1 1000cc 2 cups, how much powder do you need? You don't have to rush 1000cc every time, do you?

55g / 1000cc equals = > 27.5g / 500cc equals = > 5.5g / 100cc

So take 1 cup 150cc black coffee cup as an example

Make 1 cup = > 150cc = > Coffee about 9g (8.25g)

Make 2 cups = > 300cc = > Coffee about 17g (16.5g)

Make 3 cups = > 450cc = > Coffee about 25g (24.75g)

Make 4 cups = > 600cc = > Coffee about 33 g

If your brewing method is to look at the number of grams on the scale, then you must consider that the coffee powder will absorb water equal to 1.5 times its own gram (if it drips long enough, I will remove the upper filter cup when the water level is below the coffee powder, so it is 1.5 times)

In other words, take a cup of 150cc black coffee cup as an example, you must add water to 163g before stopping the water.

If your brewing method is to remove the upper filter cup when you see that the next cup is 150cc, then you don't have to think about the fact that the coffee powder will absorb water.