Setting a grind for a floor of 60
A floor of 60 drinks on a kitchen timer. The machine sits down the hall, the water is whatever the tower supplies, and the person who empties the hopper is whoever draws the short straw at 07:10. In January 2026 we took the first 20 kg week on that kind of floor and wrote the grind on a card the kitchen could read without calling the bar.
We started with the bar’s 19 g / 26-second espresso target and immediately threw it out for their brew basket. The machine ran hotter than our group heads. A setting that tasted like chocolate and red apple on Hamilton Street tasted thin and loud in their kitchen. We opened the burrs two marks, timed a 1.6-litre batch, and wrote the number on a card taped inside the cupboard.
The card lists grind mark, dose if they weigh, brew time, and the rest day of the bag. It also lists the Tuesday drop window. When the water filter in that tower was changed three weeks later, the same card told us why the cups went bitter before anyone mailed the bar. We recut on the next Thursday.
Sixty people will finish 20 kg in a month if the kitchen is the only coffee on the floor. They will finish it faster if meetings run through lunch. Floor Service exists for that volume: weekly bags, a machine check, and two barista hours so the card stays true after someone “helps” by twisting the collar. Desk Fuel covers the 10–30 person version of the same problem with 12 × 340 g.
If your floor is guessing at a collar mark, send the machine name and a start week. The sample kit is three 340 g bags and drip packs. Offices over 15 people do not pay for that first taste.