Everyone like their coffee differently, that being said there are a few simple variables to consider when brewing your perfect cup.
Here is some use full information gathered from the National Coffee Association
How to Brew Coffee (ncausa.org)
One of the best way to start enjoying coffee is by purchasing high quality roasted beans, I would encourage you to try beans from different countries and different roasts. There are many different types of flavors to be enjoyed, each country and region will provide a unique flavor to your coffee.
The quality and flavor of your coffee is not only determined by your favorite brewing process, but also by the type of coffee you select. There can be a world of difference between roasts check out the Roasting Guide Page for suggestions.
Purchase coffee as soon as possible after it’s roasted. Fresh-roasted coffee is essential to a quality cup, so buy your coffee in small amounts (ideally every 1-2
Your beans’ greatest enemies are air, moisture, heat, and light.
To preserve your beans’ fresh roasted flavor as long as possible, store them in an opaque, air-tight container at room temperature. Coffee beans can be beautiful, but avoid clear canisters which will allow light to compromise the taste of your coffee.
Keep your beans in a dark and cool location. A cabinet near the oven is often too warm, and so is a spot on the kitchen counter that gets strong afternoon sun.
If you buy whole bean coffee, always grind your beans as close to the brew time as possible for maximum freshness. A burr or mill grinder is best because the coffee is ground to a consistent size.
A blade grinder is less preferable because some coffee will be ground more finely than the rest. If you normally grind your coffee at home with a blade grinder, try having it ground at the store with a burr grinder - you’ll be surprised at the difference! (Whichever option you use, always follow manufacturers' recommendations when using your grinder, and be mindful of any necessary safety considerations.)
The size of the grind is hugely important to the taste of your coffee. If your coffee tastes bitter, it may be over-extracted, or ground too fine. On the other hand, if your coffee tastes flat, it may be under-extracted, meaning your grind is too coarse.
see picture below.
If you're having the coffee ground to order, tell the professionals where you purchase your coffee exactly how you will be brewing it. Will you be using a French Press? A flat or cone drip filter? A gold mesh filter? They will grind it specifically for your preparation method.
A general guideline is called the "Golden Ratio" - one to two tablespoons of ground coffee for every six ounces of water. This can be adjusted to suit individual taste preferences.
Check the cup lines or indicators on your specific brewer to see how they actually measure. And remember that some water is lost to evaporation in certain brewing methods.
Safety first! Of course, any time you are working with heat and hot beverages, take all necessary precautions for everyone from those preparing coffee, to those being served, and drinking coffee.
Your brewer should maintain a water temperature between 195 to 205 degrees Fahrenheit for optimal extraction. Colder water will result in flat, under-extracted coffee, while water that is too hot will also cause a loss of quality in the taste of the coffee. (However, cold brew does not need any heat.)
If you are brewing the coffee manually, let the water come to a full boil, but do not over boil. Turn off the heat source and allow the water to rest a minute before pouring it over the grounds.
Coffee usually cools rapidly after being served, depending upon the container from which it is being served. And, many coffee drinkers may add cream or milk which also has a cooling effect. Ultimately, the temperature at which any individual coffee drinker will prefer their coffee is a personal preference, like so many other things that make coffee special. These are some of the reasons why it is best to serve coffee right after brewing, when it is fresh and hot – typically at a temperature of 180-185F.
Of course, with respect to drinking coffee, vs. serving, you should always allow your coffee – or any hot beverage – to reach a comfortable temperature before drinking. One study has shown that coffee drinkers typically drink their coffee at 140 degrees Fahrenheit or below.
And again, those preparing and serving coffee need to be mindful of safety, which could include factors such as the location where coffee is being served, and the coffee drinkers themselves, which can only be assessed by those preparing and serving coffee.
The amount of time that the water is in contact with the coffee grounds is another important flavor factor.
In a drip system, the contact time should be approximately 5 minutes. If you are making your coffee using a French Press, the contact time should be 2-4 minutes. Espresso has an especially brief brew time — the coffee is in contact with the water for only 20-30 seconds. Cold brew, on the other hand, should steep overnight (about 12 hours).
If you’re not happy with the taste of the final product, you're likely either:
Over-extracting - the brew time is too long
Under-extracting - the brew time is too short
Experiment with the contact time until you get the right balance for your taste.