The Beginner’s Guide to the ROK Espresso Maker

The Beginner’s Guide to the ROK Espresso Maker

November 02, 2016 — Gregory Cromwell
ROK Safety and Maintenance

ROK Safety and Maintenance

We’d love for you and your ROK to enjoy a long and happy life together. To that end, you’ll find safety and maintenance tips below which will ensure the longevity of your ROK.

Don’t grind your coffee too fine

Using overly fine coffee can lead to damage and breakage of the internal plastic components, and in extreme cases, breakage of one or both levers. 

Do not apply excessive force to your ROK. It is not necessary to apply great force to produce great shots of espresso.

We recommend starting with a coarser grind and experiment and gradually moving to a finer grind. For more on how to determine the proper fineness, please check out this blog. The aim is to have a stream of coffee which looks more like honey than a gushing torrent. A grind which is too coarse results in a “gusher” and will likely taste awful.

Grinding coffee too fine can “choke” the ROK. This means regardless of how much pressure is applied to the levers, very little-to-no coffee comes out the bottom. If your coffee seems very restricted and comes out in drips (or not at all), you’re grinding too finely. Try a coarser grind.

Typically, the espresso grind you get from a grocery store or cafe is too fine. If you’re buying pre-ground coffee from a café, ask them to grind it one or two steps coarser than espresso. If you’re using the grinder at your grocery store, set it one or two steps coarser than espresso. A symptom of internal damage from exerting too much force on the handles is pressure loss; i.e. air escaping from the top of the ROK while pressing a shot. In most cases, this can be remedied with a replacement O-ring and/or plunger. NOTE: Damage of this sort is not covered under the ROK warranty!

Don’t crank the portafilter into place

The portafilter will lock in position using only moderate force. “Cranking” the portafilter into the lock position can damage the main plastic cylinder, the filter seal, the bayonet ring, and/or the portafilter itself.

If you find the portafilter is unwinding as pressure is being applied during a shot, you need only clean the coffee oil and residue from the bayonet ring groove that the portafilter slots into.

Do not put your ROK in the Dishwasher!
Do not soak your ROK with denture tablets!
Do not use abrasive scouring pads on the outside of your ROK!

Give Your ROK Some Love

Dry your ROK thoroughly after each use.

This will help you maintain the shiny finish of the body of the ROK. It also reduces the chances of mineral build-up (lime scale) and resulting corrosion. Allowing water to sit on the body of the ROK will, over time, tarnish the finish and create water marks which can be difficult to remove.

Cleaning the portafilter

Coffee residue can build up under the basket in the portafilter. Take the basket out when cleaning your portafilter.

Removing mineral buildup (lime scale)

If you notice mineral deposits around the rim where the aluminium frame meets the plastic cylinder, it’s time for a little maintenance. Failing to remove mineral deposits can result in corrosion and permanent damage.

To make cleaning easier, you can remove the cylinder. This only requires that you undo the main screw (joining the connection arms) at the top of the ROK. This will allow you to take out the plunger, and the plastic cylinder should just twist to unlock and pull straight up and out.

The unpolished aluminium inside the ROK may also have mineral deposits. Don't use a abrasive scouring pads to clean the inside. Use a soft cloth and a a 50/50 solution of white vinegar and water to wipe the inside of the frame. You won't remove all marks or deposits and that's ok.

Polish your ROK

If you really want to bring the sparkle back to your ROK, you can use aluminium polish.

Making Better Shots

Use fresh coffee and grind right before making a shot.

For an average coffee dose of 16-18 grams (about two ROK scoops of whole beans), your resulting shot should be between 30 and 60 ml (between 1 and 2 ounces). Running shots too long can lead to excessive bitterness. Too short, and your shot may taste acidic (some folks prefer this). Your shots will vary depending on the coffee you use. Experiment to find a ratio that works for you.

Join us on Facebook and watch our blog for more ROK tips and tricks. Please share your own experiments and discoveries with us!

Have fun and enjoy your coffee!

 

October 26, 2016 — Andrew Bleakley
Porlex Grinder English Instructions

Porlex Grinder English Instructions

The Porlex and ROK are proving to be a highly sought after unpowered coffee dynamic unpowered duo! Currently, the Porlex comes with great instructions, but they are in Japanese. Fair enough; they are made in Japan! We have had requests for English Instructions, so for those of you who cannot read Japanese, here are the Porlex instructions in English, you may also download in PDF format

PORLEX CERAMIC COFFEE MILL:

 

MANUAL

Thank you for purchasing Porlex Ceramic Coffee Mill.

Please read the instructions thoroughly before use so you can enjoy the Grinder for many years.

HOW TO USE

Take off the Lid and fill the Body with the amount of coffee beans you wish to grind.

Replace the Lid and place the Handle on the Shaft.

Holding the Body tightly, turn the Handle clockwise until you feel no resistance at all.

Ground coffee is stored in the bottom Cup.

Note: It is easier to take off the Lid or remove the Cup from the Body by twisting them in either direction. The same is true when placing them back onto the Body.

Note: Grinding adjustment for Coarse or Fine must be done by turning the Adjusting Wheel clockwise for a Fine grade and counterclockwise for a Coarse grade.

Note: If the Adjusting Wheel is tightened too much, the Ceramic blades will get stuck and the Handle will not turn. In that case, the Adjusting Wheel must be relaxed to the point where the Handle can be turned. This point is considered the finest grade setting.

Note: After removing the Adjusting Wheel from the Shaft, the Ceramic blades can be removed as well. This should be done in order to wash the grinder completely.

CAUTION

Make sure coffee beans are dry and include no foreign substances.

Stop grinding immediately if something harder than coffee beans is felt or if an odd sound is heard. Empty the contents from the Body and remove any foreign matter.

The Porlex is designed for grinding roasted coffee beans. If grinding unroasted coffee beans is desired, make sure they can be ground smoothly.

Roasted nuts and beans can be ground as well, but do not grind anything which contains too much oil.

When the Grinder will not be used for some time, it should be washed and dried. Any residue should be removed with a soft brush (such as a toothbrush), especially from the Ceramic blades. Make sure that special care is taken when handling the Ceramic Blades, as they are breakable. Make sure the Grinder is thoroughly dried before storage or reuse.

After changing the setting of the Adjusting Wheel, turn the Handle cautiously to avoid damaging the Ceramic Blades.

If the Grinder has been damaged by grinding something very hard or from dropping it on the floor, stop using it immediately.

 

RESETTING CERAMIC BLADES IN THE GRINDER

When resetting Ceramic Blades in the Grinder, please make sure of the following:

- The 3 recesses on the outside of the Female Blade must be clean and without any residue.

- The 3 recesses must be fitted on the 3 projections inside bottom part of the Body (see Image below), and make sure the Female Blade sits flat and will not turn.

- The Ceramic Male Blade is fixed on the plastic Blade Base and is inserted onto the Shaft.

- The Adjusting Wheel must be installed on the Shaft and tightened until the Male Blade touches the Female Blade lightly. This position is considered the finest grinding grade.

ADJUSTING THE BLADES FOR COARSE GRADE TO FINE GRADE

Coffee grounds can cause trouble in setting the Blades appropriately. Make sure that no coffee grounds get stuck between any parts of the grinding mechanism.

If the Adjusting Wheel is unscrewed too far for coarse grade grinding, it could drop off the Shaft during grinding, along with Ceramic Blades. If this happens, stop turning the Handle and reset these components according to the steps above.

Make sure the Adjusting Wheel is installed onto the Shaft with the raised ridge facing the Male Blade Base.

GRINDER PARTS WITH NAMES

1)   PLASTIC HANDLE GRIP

2)   METAL HANDLE

3)   STAINLESS STEEL LID

4)   STAINLESS STEEL SHAFT

5)   STAINLESS STEEL BODY

6)   CERAMIC MALE BLADE

7)   CERAMIC FEMALE BLADE with 3 RECESSES

8)   PLASTIC MALE BLADE BASE (male blade is set on this base)

9)   ADJUSTING WHEEL

10) STAINLESS STEEL CUP

11) BIAS SPRING (on the lower shaft – not shown)

October 19, 2016 — Gregory Cromwell

Porlex Grinder English Instructions

The Porlex and ROK are proving a highly sought-after unpowered coffee dynamic  duo! Currently, the Porlex comes with great instructions, but they are in Japanese. Fair enough: they are made in Japan! We have had requests for English Instructions, so for those of you who cannot read Japanese, here are the Porlex instructions in English. You may also download in PDF format

 

 

PORLEX CERAMIC COFFEE MILL:

 

MANUAL

Thank you for purchasing Porlex Ceramic Coffee Mill.

Please read the instructions thoroughly before use so you can enjoy the Grinder for many years.

HOW TO USE

Take off the Lid and fill the Body with the amount of coffee beans you wish to grind.

Replace the Lid and place the Handle on the Shaft.

Holding the Body tightly, turn the Handle clockwise until you feel no resistance at all.

Ground coffee is stored in the bottom Cup.

Note: It is easier to take off the Lid or remove the Cup from the Body by twisting them in either direction. The same is true when placing them back onto the Body.

Note: Grinding adjustment for Coarse or Fine must be done by turning the Adjusting Wheel clockwise for a Fine grade and counterclockwise for a Coarse grade.

Note: If the Adjusting Wheel is tightened too much, the Ceramic blades will get stuck and the Handle will not turn. In that case, the Adjusting Wheel must be relaxed to the point where the Handle can be turned. This point is considered the finest grade setting.

Note: After removing the Adjusting Wheel from the Shaft, the Ceramic blades can be removed as well. This should be done in order to wash the grinder completely.

CAUTION

Make sure coffee beans are dry and include no foreign substances.

Stop grinding immediately if something harder than coffee beans is felt or if an odd sound is heard. Empty the contents from the Body and remove any foreign matter.

The Porlex is designed for grinding roasted coffee beans. If grinding unroasted coffee beans is desired, make sure they can be ground smoothly.

Roasted nuts and beans can be ground as well, but do not grind anything which contains too much oil.

When the Grinder will not be used for some time, it should be washed and dried. Any residue should be removed with a soft brush (such as a toothbrush), especially from the Ceramic blades. Make sure that special care is taken when handling the Ceramic Blades, as they are breakable. Make sure the Grinder is thoroughly dried before storage or reuse.

After changing the setting of the Adjusting Wheel, turn the Handle cautiously to avoid damaging the Ceramic Blades.

If the Grinder has been damaged by grinding something very hard or from dropping it on the floor, stop using it immediately.

 

RESETTING CERAMIC BLADES IN THE GRINDER

When resetting Ceramic Blades in the Grinder, please make sure of the following:

- The 3 recesses on the outside of the Female Blade must be clean and without any residue.

- The 3 recesses must be fitted on the 3 projections inside bottom part of the Body (see Image below), and make sure the Female Blade sits flat and will not turn.

- The Ceramic Male Blade is fixed on the plastic Blade Base and is inserted onto the Shaft.

- The Adjusting Wheel must be installed on the Shaft and tightened until the Male Blade touches the Female Blade lightly. This position is considered the finest grinding grade.

ADJUSTING THE BLADES FOR COARSE GRADE TO FINE GRADE

Coffee grounds can cause trouble in setting the Blades appropriately. Make sure that no coffee grounds get stuck between any parts of the grinding mechanism.

If the Adjusting Wheel is unscrewed too far for coarse grade grinding, it could drop off the Shaft during grinding, along with Ceramic Blades. If this happens, stop turning the Handle and reset these components according to the steps above.

Make sure the Adjusting Wheel is installed onto the Shaft with the raised ridge facing the Male Blade Base.

GRINDER PARTS WITH NAMES

1)   PLASTIC HANDLE GRIP

2)   METAL HANDLE

3)   STAINLESS STEEL LID

4)   STAINLESS STEEL SHAFT

5)   STAINLESS STEEL BODY

6)   CERAMIC MALE BLADE

7)   CERAMIC FEMALE BLADE with 3 RECESSES

8)   PLASTIC MALE BLADE BASE (male blade is set on this base)

9)   ADJUSTING WHEEL

10) STAINLESS STEEL CUP

11) BIAS SPRING (on the lower shaft – not shown)

August 19, 2016 — Gregory Cromwell