Understanding what affects the taste of coffee so you can choose the best way to brew your cup of coffee.
It is true that the taste of coffee varies by origins and/or species of the coffee beans. Arabica tends to be less bitter, but Robusta usually has more textures. Nonetheless, the way we brew them also matters a great deal.
Roasted coffee often taste stronger. However, some people may not like the taste of roasted coffee than the original taste. It is a matter of tastes and preferences. We can vary the coffee taste simply by varying the time to roast them.
The brewing temperature impacts the bitterness. In general, we do not use boiling water to brew coffee. Some people say 94 degrees celcius is perfect. The brewing time is also another important factor. The longer the time the hot water get passed the coffee ground, the more bitter the output. Hence, espresso is often less bitter and less caffeine than drip coffee.
The filter paper can also help reduce bitterness. The paper prevents tiny coffee dusts to remain in the water after brewing, reducing the time the coffee ground touches the hot water and therefore less bitter.
There are several ways to brew coffee e.g. espresso, aeropress, hot drip, french press, cold drip. etc. There is no consensus as to which way gives the best coffee taste. It is a matter of preference. Anyway, hot drip tends to be less bitter than espresso due to brewing temperature below boiling point. Cold brewing offers more depth into the coffee taste than hot drip in general. Different people like different tastes. So it is totally up to you.