My passion: Espresso. Celebrated most by me in its ristretto form. That is, all the beans, half the liquid! 
Machine: Rancilio Silvia, with a post-manufacture precise temperature control added. It’s about the best home machine I’ve found. I’ve worn out 4 lesser machines in under 10 years with daily use. The next step up would be a commercial unit with two boilers. Not gonna go there.
Beans: Alterra, a local roaster, their whole bean espresso roast. I go through 5 lbs of beans every month or so. At that rate of consumption, the beans stay fresh.
Grinder: Baratza Maestro Plus. It is standing up to heavy use, 5-6 x a day. Only 40 grind settings. If I do upgrade, it’ll probably be to something like the Baratza Precisio or the Rancilio Rocky, with more grind settings and more durable parts.
Tamper: Espro calibrated, it ‘clicks’ at 30 lbs of pressure, but you can feel it build up towards that, and modify the pressure you bring to bear.
Water: From my own well, but softened.
Cups: Bodum canteen, glass double wall, 3 oz. Keeps it hot a looooong time.
Frequency of consumption during the typical workweek: 1 shot at 5:45 AM, another at 4:30 PM, a final one about 6:30 PM.
Frequency of consumption on weekends/days off: Usually not more than 6 a day. 
Other machine uses: Makes lattes, cappucinos of which the Mrs. consumes at least 2 a day.
About 22-28 seconds of brewing at 215-225 degrees should produce from 1/4 cup of finely ground beans tamped between 20-30 lbs of pressure nearly 1 oz. of ristretto or 1.5 to 2 oz. of espresso.
Key tips:
- Grind beans just before brewing.
- Grind finer, tamp lighter.
- Make sure that not just the machine, but the portafilter is completely warmed up before brewing. The water in the boiler may be at the appropriate temperature, but if the equipment’s not hot also, the brew will be inferior.
- Heat the cups that are to receive the brew with water that’s at least 170 degrees, dumping out the water just before brewing.
- Look for tiger striping and mottling in the crema. If the crema is fine, the brew is divine!!