QUOTE(Bryan89 @ Sep 4 2018, 03:44 PM)
Are you using a V60? If so, whats the difference in the materials, plastic and cerramic? Any difference in brewing with 01 and 02?
my colleagues and I (I worked as part time barista in Taipei for quite some time) did an experiment, to compare different version of V60, plastic\ceramic\glass.
We found that there are mainly two difference.
First thing is of course heat retention:
- Ceramic: when preheated properly, has the best heat retention.
- Glass comes second and plastic worst.
However, you will see some master prefer the plastic version (like Scott Rao) because when brewing without preheating, plastic version doesn't suck up all the heat so the water temperature doesn't drop too much during the entire brewing process.
Second thing is the water flow. Inside the dripper itself you will see the spiral ribs. It's mainly designed to allow better airflow and well-circulated air means faster water flow rate.
Different version of V60 has slightly different spiral ribs depth and "solidness".
- Ceramic: Slowest among all version hence slowest flowrate.
- Plastic: Since plastic dipper is made out of mould, it has clearer spiral ribs hence faster than ceramic.
- Hario: Fastest among all. Hence it is one of the most popular version.
How flow rate affects flavor? Imagine that, the faster the coffee flow, the shorter the time where coffee and water contact, vice versa.
When your brewing time becomes shorter, you generally get more acidity, more floral and fruity aroma but less bitterness and body, and vice versa.