Is a coffee scale really necessary?
Even though coffee spoons are part of the standard accessories of many suppliers, the dosage is very imprecise. An example illustrating the argument:
If you brew a cup of coffee (200ml) in the morning and ideally use 10 grams of coffee, if you only use 1 gram too much, you are already 10% off the ideal amount. A gram sounds insignificant at first but measured in percentages, the stark deviation is easy to see. Since this inaccuracy can harm the taste of your coffee, you should only rely on the exact amount on your coffee scale.
The best results for weighing coffee are achieved when the cup is placed on the coffee scale and then set to 0. The coffee grounds can now be filled into the cup to the optimum amount.
Attention: Coffee beans have different densities
Another argument against using a coffee spoon to measure coffee is that different types of coffee have different densities. Not only the type of bean but also the roasting process has a decisive influence. It may be that one type requires a significantly larger amount to achieve the same weight and thus achieve the best mix ratio with water. On the other hand, if you are relying on volume information, it is impossible to guarantee this ratio, thus guaranteeing a perfect balance.
By the way: The SCAE (Specialty Coffee Association of Europe) recommended brew ratio is 60 grams of ground coffee to 1,000 ml of water. Converted to a 200ml cup of coffee, it takes 12 grams of coffee to achieve the perfect balance.