Inconsistant shots using different beans?

[sailor]

I wonder if anyone on here can tell me why I get different shots with different beans. I generally use 2 different beans for my coffee, but I find that I need a finer grind for one than the other. Is it because one has more oil or is one stale etc. PS I use the same tamping pressure on both.
I find if I use the same grind setting on both one will take approx. 30 seconds and the other about 15 seconds??? :-[

[TC]

Re: Inconsistant shots using different beans?

I wonder if anyone on here can tell me why I get different shots with different beans. I generally use 2 different beans for my coffee, but I find that I need a finer grind for one than the other. Is it because one has more oil or is one stale etc. PS I use the same tamping pressure on both.
I find if I use the same grind setting on both one will take approx. 30 seconds and the other about 15 seconds??? :-[

Gday Sailor. Yes- all of the above can have an influence. You can add temperature, humidity and whether your tongue is pointing left or right to your list (and probably a host of other things) as well

Chris

[Stan]

Re: Inconsistant shots using different beans?

Every bean is different. After they have been roasted I find I am adjusting the grind about 3 times for each bean as it ages. It normally takes me about 7 days to go through 500g of roasted beans so about every 2 days I find I need to adjust the grind. As Chris stated humidity, type of bean, temerature all affect the grind

[summercrema]

Re: Inconsistant shots using different beans?

Something I can think of is the density of the bean among other things.

[askthecoffeeguy]

Re: Inconsistant shots using different beans?

each bean has its own unique grind point which if not different from any other then at least requires constant attention - and even the same bean can vary 20 or more times during the space of a day

and as a general rule the more a bean ages the more it gushes so a wider grind for newer beans and a finer grind setting as the bean ages is the order of the day...