AXTHEB: tak to každopádně.
osobně se mi líbí
Babbie's Rule of Fifteens:
Green (unroasted) coffee beans should be roasted within 15 months, or they go stale.
Roasted coffee beans should be ground within 15 days, or they go stale.
Ground coffee should be used within 15 minutes, or it goes stale.
Extracted coffee should be served within 15 seconds.