The product is great - quick, strong (except the handle, which shouldn't break if used properly), easy to clean and makes great coffee. Here's my tips on getting the best results -
- Warm the base before adding water
- Use boiling water in the bottom
- Keep the lid down while brewing
- Clean without soap
I have found using cold water and not heating the base first means the water spends a long time getting hot - this entire time the water is mixing with the coffee and taking flavour - I personally find the coffee taste bitter and overdone using this method, by using already boiling water, and pre-warming the base for a few seconds, you not only get your coffee much faster (about 1 minute compared with 4 or 5 minutes), but the flavour is perfect. If you think about a proper espresso machine - it forces water through the coffee in around 20 - 25 seconds, by pre-boiling the water you are getting as close to this as you can - leaving it to heat up while mixing with the coffee is more like using this device as a cafetiere.
Keeping the lid down stops a large portion of coffee evaporating as it comes up, I have found the flavour is better as less concentrated.
I have also found using soap to clean this device detracts from the flavour of the coffee, no matter how well you rinse it after. So I just rinse it with water and no soap.
It's down to everyone's individual tastes, but this is how I use mine to get the best flavour out of my coffee.