The basic steps for brewing filter coffee

Filter coffee works by pouring hot water through ground coffee and a paper or metal filter, letting gravity pull the water through the grounds and into a pot or cup below. The water extracts flavor from the coffee as it passes through, and the filter catches the grounds so you get a clean cup. The whole process takes about four to six minutes from start to finish.

You'll need four things: a filter coffee maker (the kind with a basket that holds grounds and a pot underneath), ground coffee, water, and a filter. The ratio that works for most people is one tablespoon of ground coffee per six ounces of water, though you can adjust this to taste once you've made it a few times.

Key Takeaways

  • Use one tablespoon of ground coffee per six ounces of water as your starting point, then adjust stronger or weaker based on what you prefer.
  • Water temperature matters—aim for 195 to 205 degrees Fahrenheit, which is just off boiling, not actively bubbling.
  • Pour the water slowly over the grounds in a circular motion so all the coffee gets wet evenly and brews at the same rate.
  • Brewing takes four to six minutes; if it's much faster or slower, your grind size is probably wrong for your maker.
  • Clean your maker after each use and replace the filter basket or carafe gasket if water starts leaking around the edges.

Getting the water temperature right

Water that's too hot will over-extract the coffee, making it bitter. Water that's too cool won't pull enough flavor out, leaving it weak and flat. The sweet spot is 195 to 205 degrees Fahrenheit—hot enough to do the job, but not so hot it damages the coffee.

If you have a thermometer, use it. If not, boil your water and let it sit for about 30 seconds before pouring. That brief wait brings it down from a rolling boil to the right temperature. Don't wait longer than a minute or two—the water will cool too much. You want steam rising from it when you pour.

Measuring and grinding your coffee

Start with one tablespoon of ground coffee per six ounces of water. A standard coffee mug is about 8 to 12 ounces, so for a single mug you'd use roughly one and a half to two tablespoons. For a full pot of four to six cups, use four to six tablespoons. Write this down the first time so you remember it.

The grind size matters. For a standard drip filter maker, you want a grind that looks like sand—not powder-fine (which clogs the filter and makes the coffee bitter) and not chunky (which lets water rush through too fast and leaves it weak). If your maker came with instructions, they usually mention the grind. If you're buying pre-ground coffee, look for bags labeled "drip" or "filter."

Setting up the filter and grounds

Place a paper or metal filter in the basket. If you're using paper, rinse it with hot water first—this removes the papery taste and warms up the basket so the brewing temperature stays steady. Tap out the excess water.

Pour your ground coffee into the filter and shake the basket gently so the grounds settle into an even layer. Don't pack it down or tamp it. You want the grounds loose enough that water can flow through evenly. Place the pot or cup underneath the basket, making sure it's centered so the coffee doesn't splash onto the heating element or counter.

Pouring the water and watching the brew

Pour the hot water slowly over the grounds in a circular motion, starting from the center and moving outward. Pour just enough to wet all the grounds—this is called the "bloom"—and pause for about 30 seconds. This lets the coffee begin releasing its flavors. Then pour the rest of the water in a slow, steady stream, keeping the water level just below the rim of the basket.

The water should drip through steadily. If it's gushing through in a minute or two, your grind is too coarse. If it's trickling and takes ten minutes, your grind is too fine. Brewing should take four to six minutes total. Once the dripping stops, the coffee is ready to drink.

Cleaning and maintenance

Empty the used grounds and filter into the trash while they're still warm—they're easier to remove. Rinse the basket and pot with hot water right away. If you let coffee dry in the basket, it hardens and is harder to clean.

Once a month, run a cycle with white vinegar and water (equal parts) instead of coffee to dissolve mineral buildup from your tap water. Run two cycles of plain water afterward to rinse out the vinegar. If water starts leaking around the edges of the pot or basket, the rubber gasket has probably worn out—most makers sell replacement gaskets cheaply, and swapping it takes less than a minute.

Troubleshooting common problems

Coffee tastes bitter: Your water is probably too hot or you're using too much coffee. Try letting the water cool for 45 seconds after boiling, or reduce your coffee by half a tablespoon and taste it. Bitter can also mean the grounds sat in the water too long—if your maker has a heating element that keeps the pot warm, move the pot away once brewing finishes.

Coffee tastes weak or watery: You're likely using too little coffee or your grind is too coarse. Add another half tablespoon of coffee next time, or ask at a coffee shop or grocery store if they can grind it finer for you. If the water is rushing through in under three minutes, the grind is definitely the problem.

Water leaks from the sides: The rubber gasket that seals the pot to the basket has cracked or shrunk. You can order a replacement gasket for your specific maker model—check the maker's brand name and model number, usually printed on the bottom—and swap it in. Until then, pour slowly and keep a towel nearby.

Frequently Asked Questions

Can I use regular tap water or does it have to be filtered?

Tap water works fine for most people. If your tap water is very hard (lots of minerals) or has a strong chlorine smell, filtering it first will improve the taste. Hard water can also leave mineral buildup in your maker faster, so you may need to run the vinegar cleaning cycle more often—every two weeks instead of monthly.

What's the difference between paper and metal filters?

Paper filters trap more of the coffee's oils, giving you a cleaner, lighter cup. Metal filters let some oils through, so the coffee tastes richer and fuller. Paper filters are cheaper and you throw them away after one use. Metal filters last years but need rinsing after each brew. Try both and see which you prefer.

Can I make filter coffee without a coffee maker?

Yes. Pour hot water over grounds in a cup, let it sit for four minutes, then pour slowly into another cup, leaving the grounds behind. It's messier than a maker and some grounds will slip through, but it works. You can also buy a straightforward pour-over cone (a plastic or ceramic funnel with a filter basket) for under ten dollars—it does the same job as a full maker but takes up almost no space.

How long does brewed coffee stay fresh?

Drink it within an hour of brewing for the best taste. After that, it starts to taste flat and stale. If you have leftover coffee, store it in the fridge in a sealed container and reheat it gently in a microwave or on the stove—don't let it boil. Reheated coffee won't taste as good as fresh, but it's still drinkable for up to three days.

Do I need to descale my coffee maker if I have soft water?

Soft water means fewer minerals, so mineral buildup happens more slowly. You can descale every two to three months instead of monthly. If you notice water dripping slower than usual or the coffee tastes off, that's a sign to descale even if it hasn't been that long. Hard water areas should descale monthly or more often.