Start with fresh, whole bean Kirkland Signature (or San Francisco Bay) Gourmet Whole Bean coffees, available in 1000g bags.
Brewed coffee is over 98% water. Thus your cup of coffee depends heavily on your water quality. It is important to use fresh, cold water. If tap water in your area is not very good, use bottled water. Never use distilled or soft water. Never use hot water which has gone through your hot water heater.
Grind your coffee beans just before brewing. Roasted coffee stales when exposed to air, and ground coffee stales at least 10 times faster.
Grinding exposes more coffee surface area to the hot water for better flavour and essential oil extraction. However, coffee ground too fine will taste bitter and over-extracted. Coffee ground too coarse will taste weak and watery.
Generally, the faster the water flows through the grounds, the finer the grind should be. Espresso coffee beans should be ground almost to a powder, that will clump if you pinch some. Drip filter coffee should be ground to the rough consistency of sand. Use a burr grinder with the proper setting for your coffee maker. You can also use a blade grinder for 8 to 15 seconds.
Use approximately 2 rounded tablespoons of ground coffee per 6 oz of water. Adjust to taste.
Best methods are drip filter, vacuum, French press, and espresso. Percolating over-extracts the coffee. Investing in a good coffee maker is worthwhile. A French press is inexpensive and makes great coffee.
Ideal brew temperature is just under boiling — 200-208 degrees F (93-98 degrees C). The hot water should be in contact with the grounds for an adequate amount of time.
Keeping brewed coffee fresh
Unfortunately, fresh brewed coffee degrades over time. Try to consume within an hour or so. Keep in a thermal carafe, as a burner or warmer will cause it to degrade very quickly. Keep on a burner for 15-20 minutes maximum. Also, reheating or boiling ruins coffee (which is why percolators are not good coffeemakers).
Tips for even better coffee!
Pre-wet the grounds with an ounce of cold water before brewing. This will cause the grounds to swell and you will extract more flavor. If possible, stir or agitate the water in the grounds while brewing. Finally, experiment! Only you know how you like your coffee. Note, coffee grounds are great for mulching or compost bins!
For more tips on how to brew a perfect coffee visit the Rogers Estate Coffees Crema Press