Always use freshly roasted coffee beans. Look for a roast date rather than an expiration date to ensure the beans are at their peak flavour.
For filter coffee, a medium grind is ideal. It should be coarser than espresso but finer than a French press grind.
Use filtered water to avoid any impurities that can alter the taste of your coffee. The water temperature should be between 195°F to 205°F (90°C to 96°C).
Use a reliable filter coffee maker, such as a pour-over (like a V60 or Chemex) or an automatic drip coffee maker.
Always use freshly-boiled milk to pour over the coffee decoction for the best consistency, taste and froth.