Usual problem using percolators?
Percolators are not considered the best appliances for brewing coffee. The operating principle is to get boiling water and steam through the coffee ground placed above the pot, in a basket, until all the flavors have been washed; the resulted coffee flows back into the pot. Most coffee experts don’t recommend using a coffee percolator, just because with this type of appliance it is very easy to break the rules of accurate coffee brewing, and more likely two of them: Do not boil coffee. Do not pass water over the coffee grounds more than once. However, this doesn’t mean it is impossible to make good coffee using a percolator! It just needs to be used correctly or it can cause over-boiling, and therefore a tendency to release the bitterness of coffee. This requires more careful usage. Coffee ground and water are must measured properly and consistently able to brewed freshly coffee.