Why Is My Chemex Coffee Taking So Long? (Explained!)

Dr. Peter Schlumbohm invented the Chemex coffeemaker in 1941 while pursuing the perfect cup of coffee. His dedication to perfection in the invention of his products held true for the Chemex brewer and it has become a mainstay in the coffee fanatic culture.

Nothing is more frustrating first thing in the morning than coffee complications. You just want to roll out of bed, brew your cup and sip away as you greet the new day. If you are a pour-over coffee connoisseur, this can be especially frustrating when your brew takes extra long.

The Chemex coffeemaker brews rich, flavorful coffee that is considered to be the purest cup of java any coffee fanatic can get and, as a result, has become the premium choice of brewer and method for brewing among the coffee lover’s culture.

What is Chemex and how does it work?

The brewing process for the Chemex coffeemaker is inherently slower than traditional coffee brewers by design. It uses lab-quality, double-bonded paper filters, and a multi-step pour-over method to brew the best cup of coffee possible, but the trade-off is a bit slower brew time.

Part of the reason for this is the double-bonded paper filters used in the brewing process that help to filter out the impurities and bitter elements of the bean, leaving you with the pure flavor of the coffee bean.

The other part of the reason is the pour-over process itself, which is a two-part process in which you do a first pour-over to wet the grounds and allow them to bloom, and then a second pour-over which is a slow and steady pour that is woven evenly back and forth over the grounds, extracting the flavor until you are done brewing your desired amount of coffee.

How long should a Chemex take to brew?

The time it takes to brew coffee with a Chemex coffeemaker comes down to the size of the Chemex being used. We followed the brewing instructions from Chemex and timed the duration for each different

3 Cup Chemex6 Cup Chemex8 Cup Chemex
4 minutes (Average)5 minutes (Average)6 minutes (Average)

How long should a 3-cup Chemex take?

If the grind is correct, the brewing process for the 3 cup Chemex should take roughly four minutes. For a more detailed description of how to use the 3 cup Chemex coffeemaker click here.

How long should a 6-cup Chemex take?

If the grind is optimal, the brewing process for the 6-cup Chemex should take roughly five minutes. For a more detailed description of how to use the 6-cup Chemex coffeemaker click here

How long should an 8-cup Chemex take?

If the grind is optimal, the brewing process for the 8-cup Chemex should take roughly five and a half to six minutes. For a more detailed description of how to use the 8-cup Chemex coffeemaker click here.

Why is my Chemex taking so long?

Here are the three most common causes of a slow brew when using a Chemex coffeemaker:

  • The first and most common thing that causes a slow brew time is the grind of your bean. If it is too fine, it can clog up the pores in the paper filter with fine coffee bean silt. Try a slightly coarser grind and see if the brew time improves. The same can be said for too quick of a brew. Check the grind. It may take a few tries to find the right coarseness setting for your grinder, but this should do the trick.
  • Secondly, the water used is important. In some cases, high mineral content in the water can cause the pores in the paper filter to clog. Try filtered water and see if this makes a difference.
  • Thirdly, make sure you are not using excessive amounts of coffee grounds in your paper filter as the weight of the wet grounds can collapse the filter into the draining hole at the bottom of the upper cone, blocking the liquid from seeping through properly.

   Happy brewing!

Leave a Reply

Your email address will not be published.