# How to Use a Drip Coffee Maker

> Where the water goes, how much coffee to use, which filter to buy and how often to descale — plus how a drip machine actually works inside.

Topic: Brewing  
Published: 2026-08-29T09:40:00-04:00  
Updated: 2026-08-29T09:40:00-04:00  
Author: Mical Robert, Editor (https://trysix.online/author/mical-robert)  
Canonical: https://trysix.online/how-to-use-a-drip-coffee-maker

## The short answer

Fill the reservoir with cold water to the mark for the cups you want, drop a filter in the basket, and add one level tablespoon of ground coffee per 6 oz cup. Close the lid, press the switch, and wait four to six minutes.

## Key takeaways

- Water goes in the reservoir at the back or side, never into the basket with the coffee.
- The 'cups' marked on a carafe are 5–6 oz, not mugs. A 12-cup pot fills about six mugs.
- One level tablespoon per marked cup is the standard dose — around 60 g per litre.
- Descale every one to three months. Scale is the most common reason an old machine brews weak, tepid coffee.

Drip machines are the most common way coffee gets made and the least often read about, so most people work theirs out by trial and error and never quite fix the parts that are off. A few small changes — the dose, the filter, and descaling — turn a mediocre machine into a genuinely good one.

## Where everything goes

Every drip machine has the same four parts, whatever it costs. A water reservoir, usually at the back with a hinged lid. A filter basket, in a swing-out or lift-up holder above the carafe. The carafe itself, on a warming plate. And a shower head above the basket that you probably never look at.

### Making a pot, step by step

1. **Fill the reservoir with cold water** — Lift the lid at the back and pour cold water in to the marking for the number of cups you want. Cold, not hot: the machine's thermostat is calibrated to heat it, and starting with hot water usually produces under-heated, under-extracted coffee.
2. **Fit the filter** — Open the basket and drop in a paper filter — a #4 cone or a basket filter, depending on your machine's shape. If yours has a permanent gold-tone mesh filter, use that instead; no paper needed.
3. **Add the coffee** — One level tablespoon of medium-ground coffee per marked cup. Level it out so water passes through evenly rather than channelling down one side.
4. **Close and start** — Close the basket and the reservoir lid, make sure the carafe is seated properly under the basket, and press the switch. Many machines have a drip-stop valve that only opens when the carafe is in place.
5. **Wait, then remove the carafe** — Four to six minutes for a full pot. Take it off the warming plate once it is done — see below for why.

> **Take it off the hotplate** — A warming plate holds coffee at 175–185°F, which continues to cook it. Within 20 minutes the aromatics have gone and bitter compounds have developed. If you are not drinking it immediately, pour it into a thermos instead.

## How much coffee — and what 'cup' means

The single most confusing thing about drip machines is that a 'cup' on the carafe is not a cup you drink from. Manufacturers use a 5 oz or 6 oz measure, not the 8 oz US cup and certainly not a 12 oz mug. A 12-cup machine holds about 60 oz — roughly 1.8 litres, or five to six mugs.

**What a drip machine's cup markings actually mean.**

| Marked cups | Water | Coffee | Mugs it fills |
| --- | --- | --- | --- |
| 4 | 20–24 oz / 600–700 ml | 4 level tbsp / ~38 g | About 2 |
| 8 | 40–48 oz / 1.2–1.4 L | 8 level tbsp / ~75 g | About 4 |
| 10 | 50–60 oz / 1.5–1.8 L | 10 level tbsp / ~94 g | About 5 |
| 12 | 60–72 oz / 1.8–2.1 L | 12 level tbsp / ~113 g | About 6 |

That works out close to the 1:16 ratio used everywhere else on this site. If you want to weigh instead — which is more consistent, since ground coffee density varies by roast — use 60 g per litre. [How to make the perfect cup of coffee](https://trysix.online/how-to-make-a-perfect-cup-of-coffee) explains why weighing beats scooping.

## How the machine works inside

There is no pump. Water flows by gravity from the reservoir into an aluminium tube running along the base, directly above the heating element. The element boils the water in that tube, and the resulting steam bubbles push slugs of hot water up a second tube to the shower head. That is why a drip machine gurgles: you are hearing the boil-and-lift cycle.

It also explains two of the machine's limitations. Because the water is briefly boiled and then cools on its way up, output temperature is often below the ideal 195–205°F, particularly on cheap machines. And because scale forms fastest on the hottest surface, the heating tube is where limescale accumulates and where it does the most damage.

**Figure: Drip machine numbers worth knowing**

| Item | Value |
| --- | --- |
| Target brew temperature (°F — many machines run cooler) | 200 |
| Full-pot brew time (Minutes for around 12 marked cups) | 5 |
| Warming plate temperature (°F — cooks the coffee) | 180 |
| Descaling interval (Days, in hard-water areas) | 60 |

_Typical values for a domestic machine. The temperature figure is where budget machines most often fall short._

## Filters: paper, mesh or cloth

**Filter types and what each does to the cup.**

| Filter | Cup | Cost | Note |
| --- | --- | --- | --- |
| Bleached paper | Cleanest; retains oils and diterpenes | Cheap, disposable | Rinse first to remove paper taste |
| Unbleached paper | Same, slightly more papery | Cheap, disposable | Rinsing matters more |
| Permanent gold mesh | Fuller body, some sediment | One-off purchase | Passes oils through |
| Cloth | Full body, very little sediment | Reusable, needs washing | Must be kept scrupulously clean |

Paper filters retain cafestol and kahweol, the diterpenes associated with modest increases in LDL cholesterol in unfiltered coffee. If that matters to you, paper is the choice; if body and mouthfeel matter more, mesh.

## Cleaning and descaling

1. After every pot: rinse the carafe and the basket. Coffee oils go rancid, and stale oil is the reason an old machine's coffee tastes off even with fresh beans.
2. Monthly, or every 40 brews: descale. Fill the reservoir with equal parts white vinegar and water, run half a cycle, switch off for 30 minutes, then finish the cycle.
3. Then run two full cycles of plain water to flush the vinegar out. Skipping this is how you get a pot that tastes of salad dressing.
4. In hard-water areas, descale every one to two months. In soft-water areas, every three or four is plenty.

> **The symptom to watch for** — A machine that used to take five minutes and now takes nine, or that produces noticeably cooler coffee, is almost always scaled rather than broken. Scale insulates the heating tube and narrows the water path. Descaling fixes both.

## Getting more out of a basic machine

- Use filtered water. Coffee is 98.5 percent water, and it also halves how fast scale forms.
- Grind fresh, medium — the texture of coarse sand. [How to grind coffee beans](https://trysix.online/how-to-grind-coffee-beans) covers the sizes.
- Pre-wet the paper filter with hot water and discard the rinse. It removes the papery taste and warms the carafe.
- Do not brew half a pot in a 12-cup machine if you can avoid it. Small volumes cool faster on the way through, so extraction suffers.
- If your machine cannot get hot enough, brewing by hand is a genuine upgrade — [how to make coffee without a coffee maker](https://trysix.online/how-to-make-coffee-without-a-coffee-maker) uses water you control directly.

## Frequently asked questions

### Where do you put the water in a coffee maker?

In the reservoir, usually a hinged-lid compartment at the back or side of the machine, marked with cup levels. Never pour water into the filter basket with the coffee — that is where the brewed water arrives, not where it starts.

### How many scoops of coffee for a 12-cup pot?

About 12 level tablespoons — roughly 113 g. The markings on a carafe use a 5–6 oz cup, so a 12-cup pot is about 1.8 litres and fills five or six mugs, not twelve.

### How does a drip coffee maker work?

Water flows by gravity into a tube above a heating element, which boils it. The steam pushes slugs of hot water up a second tube to a shower head, which drips it over the grounds. The gurgling you hear is that boil-and-lift cycle.

### How often should I descale my coffee maker?

Every one to two months in a hard-water area, every three to four in a soft-water one. Run a half-and-half mix of white vinegar and water through, pause mid-cycle for 30 minutes, then flush with two full cycles of plain water.

## Sources

- [How to Brew Coffee](https://www.ncausa.org/About-Coffee/How-to-Brew-Coffee) — National Coffee Association USA. Supports the coffee-to-water dose, the brewing temperature range and the filter guidance.
- [Coffee Standards](https://sca.coffee/research/coffee-standards) — Specialty Coffee Association. Supports the brewing ratio and extraction targets a drip machine is designed to hit.
- [FoodData Central](https://fdc.nal.usda.gov/) — USDA Agricultural Research Service. Supports the reference nutrient and composition data for brewed coffee used as a baseline.

## Related articles

- https://trysix.online/how-to-make-a-perfect-cup-of-coffee
- https://trysix.online/how-to-grind-coffee-beans
- https://trysix.online/how-to-make-coffee-without-a-coffee-maker
- https://trysix.online/how-much-caffeine-in-a-cup-of-coffee

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