- My safety valve opened
- Low shot weight
- Water is leaking from the side of the machine
- Water is leaking from beneath the portafilter
- How to look after your heat transfer plate
- Coffee is bubbling from the portafilter
- Water is spitting from the chimney
- Water is leaking from the safety valve
- My machine isn't producing espresso
As with all espresso machines, the 9Barista requires a good quality grinder designed for espresso to produce delicious shots. Neither blade grinders nor those designed for filter coffee are likely to provide good results.
We’ve used all of these grinders with the 9Barista and they are all great options. Manual hand grinders are small, portable and reliable, but grinding can get a bit tiring if you’re doing more than two shots in a row. Electric grinders are more convenient but take up additional space and are not portable.
Best overall hand grinder
Comandante C40 with Red Clix: available here
Best value hand grinder (cheaper ones tend not to be good enough for espresso)
Knock Aegrind: available here
Entry level electric grinder
Rancilio Rocky: £280
High-end electric grinder
Niche Zero: £500
Here are some reviews that might help you out too:
We’re lucky enough to have some fantastic customers who have given us feedback on their grinders, recommending what works well for them. Combined with our own experience we can recommend the following settings as good starting points when first brewing with your 9Barista.
Remember, if in doubt start with a coarser setting and gradually go finer until you hit a 25 – 30 second extraction time. The ideal grind setting will depend on the coffee you’re using, so you may need to make a few of your own adjustments. Broadly speaking, go finer if the coffee tastes too acidic. It's also important to remember that the beans being used, and the freshness of those beans, also have a big effect on the grind size required. As such, these settings are purely intended as a rough guide.
- Comandante C40: 7 clicks
- Comandante C40 with Red Clix: 20 clicks
- Niche Zero: 15
- Kinu M47: 1.1 to 1.2 clicks
- Kinu Simplicity: 12 to 14
- Barazta Encore: 7
- Knock Aergrind: 1.1 to 1.3