I just measured my 6 cup pot and it takes 15g (or there abouts) of coffee. This gives 1 mug or 3 espresso cups full of coffee. 
I think Monkey is right that the principle is that it's supposed to be pretty much full (coffee expands a bit when wet so not jam packed full) and water up to the release valve.

							
						
					I think Monkey is right that the principle is that it's supposed to be pretty much full (coffee expands a bit when wet so not jam packed full) and water up to the release valve.

							
						


							
						
							
						

							
						
 ). Moka pots and filter machines will give a much better result/cost balance.
							
						
							
						
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