Coffee Brewing Guide - Plunger, Aeropress and Clever Dripper

Coffee Brewing Guide - Plunger, Aeropress and Clever Dripper

Brewing guidelines for full immersion methods:

   • Plunger (French press)
   • Aeropress
   • Clever Dripper



Quick reference instructions:

  1. Using hot water, preheat your device and rinse your paper filter if there is one.
  2. Start with a brew ratio of 60g per Litre (dry ground coffee to water).
  3. Place your device on digital scales and tare the scales so you only measure the additional ground coffee. For a 200mL coffee at the guideline brew ratio of 60g/L you will require12g of ground coffee .
  4. Grind your coffee coarse for plunger and medium fine for Aeropress and Clever Dripper.
  5. Tare the scales again so you only measure the addition of the water to the coffee. Pour in 200mL of  95°C water and ensure the coffee wetting is uniform by pouring carefully to break up lumps and reduce agglomeration. We suggest pouring from high above and/or making circles as you pour.
  6. Maintain a consistent agitation regime with the coffee that has created a floating crust. We suggest a minimal agitation regime as this will improve your consistency (if you want more extraction, use a longer steep time which is more readily controllable).
  7. Steep for 4 minutes for plunger and 2.5 minutes for Aeropress and Clever Dripper. Adjust times for taste preference.

Fine tuning your brew

"I want a stronger tasting coffee with the same flavours"

  • Increase the coffee dose by 0.5g.

"I want the fruity high notes to be more prominent"

Try one of the following at a time:

  • Decrease the steep time by 10s.
  • Reduce the agitation regime (e.g. no stirring).
  • Grind more coarse.

"I want to soften the fruity high notes and make the sweet flavours more prominent"

Try one of the following at a time:

  • Increase the steep time by 10s.
  • Increase the agitation regime (e.g. extra 5 stirs).
  • Grind more fine.

Recommended baseline grind settings:

  • Plunger - very coarse, like rock salt. This is necessary to reduce the fines in the cup.
  • Aeropress - medium fine. More fine than stove-top, more coarse than espresso.
  • Clever dripper - medium fine. More fine than stove-top, more coarse than espresso.

Or follow this link for specific Porlex grinder settings.

You can certainly use a consistent coarse (plunger) grind for all these methods if you wish. Due to the full immersion of the coffee in the water, the steep time can be increased to allow for decrease in particle surface area at the coarser grind setting.

Dose levels

Note that there is a tricky relationship between dose and extraction yield. At significantly increased doses you may find the coffee can no longer be evenly extracted and so the dose increase results in a two-fold reduction in extraction yield; one from the brew ratio and another effect from the less even extraction.

Also note that when you change the extraction yield, if you do not want a change in TDS, you should make a small dose adjustment to allow for that.

Brew Temperature

Temperature-wise a typical kettle is fine, the laws of physics ensure the liquid water is just under 100°C at its hottest and is probably about right, around 95°C. However, if you want to be sure, try an electric, temperature adjustable kettle.

Detailed information on coffee extraction principles: Science of Coffee Brewing

Tagged : Workshop, How-to, Brewing, Filter

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