Weigh your dose into the bean jar, invert the jar over the open grinder, and lift it clear in one movement. Nothing sticks to a funnel, nothing spills on the worktop, and the jar you dosed into is the jar you store the grounds in.
The flip, in four movements
1. Put the bean jar on the scale and weigh your dose straight into it.
2. Take the crank and lid off the grinder so the top is open.
3. Bring the jar mouth-down over the opening, seat it, and turn the whole thing upright in one motion.
4. Lift the jar away. Every bean has gone in, and none of them are on the floor.
It takes about two seconds once you've done it a few times, and it is unreasonably satisfying.
Why it beats pouring from the bag
Three reasons, in ascending order of importance.
First, accuracy. Pouring beans from a bag into a grinder means either over-dosing and losing the difference, or under-dosing and topping up. Weighing into a jar means the dose is exact before it goes anywhere near the grinder.
Second, tidiness. Bean bags have awkward mouths and beans are round. Enough said.
Third, and most usefully: the jar is now free. Grind, and the same jar catches the grounds, seals with its lid, and keeps them until you're ready.
Which jar for which job
Every C40 arrives with two jars — one glass, one polymer — which covers most people. Where extras earn their place is when you're brewing more than one coffee, or prepping ahead.
| Jar | Best For |
|---|---|
| Polymer, 40g | Single doses, travel, anywhere you'd rather not carry glass. |
| Glass, 40g | Everyday use at home. The brown glass is the one to reach for if the jar sits in daylight. |
| Polymer, large | French press, cupping, brewing for a table. |
Colours are useful for more than decoration, incidentally. If you keep two coffees on the go, two coloured polymer jars save a lot of squinting first thing in the morning.
Habit two: give the grinder somewhere to land
A coffee tray under the grinder catches the stray grounds that always escape at the transfer stage, and gives the crank, lid and jar lid somewhere to sit rather than rolling off the worktop. The Baby tray does the same in less space.
Habit three: keep a brush where the grinder lives
The reason people don't clean their grinder isn't reluctance, it's distance. If the brush is in a drawer in another room, it never happens. If it's next to the grinder, a five-second sweep after each brew becomes automatic and the monthly strip-down becomes a formality.
Habit four: write the number down
The single highest-value habit in this article. Every time you land on a grind setting that tastes right, record the click count and the coffee together. Over a few months you build a personal reference that beats any chart we could publish — because it's calibrated to your brewer, your water and your palate.
If you'd rather not keep a notebook, a Clix Mate keeps the count on the grinder itself.
The short version
Weigh into the jar. Flip. Grind into the same jar. Brush. Write the number down.
None of this is complicated, and none of it is compulsory. But small habits compound, and a morning routine that runs without thinking about it is worth as much as any upgrade.
