# Why does my coffee taste salty or metallic?

> A salty, metallic or mineral taste almost always comes from the water, not the coffee. Change one thing per brew, in this order: Lower your water's mineral content, then try a different water profile.

Source: https://cuplift.app/fix/salty-coffee · Updated 18 October 2026

## What it means

Salty, metallic or mineral flavours almost always come from the water. Too many dissolved minerals — or the wrong mix of them — sit on top of the coffee and flatten everything else.

It's the one fault where the water leads. Bring the mineral content down first; if that doesn't clear it, the water itself needs changing.

## Pour over: what to change

Pour over (V60, Chemex, Kalita Wave, Origami, Orea). Try these one at a time, in this order.

1. **Lower your water's mineral content** — About 20% fewer minerals — 150 to 120 ppm, say. Softer water extracts more gently, and with less buffering on the acidity it reads cleaner and brighter.
2. **Try a different water profile** — Last resort. A new water changes several flavours at once, which makes it hard to tell what did what — so it comes after every single-variable change has had its go.

## Immersion: what to change

Immersion (AeroPress, French Press, Hario Switch). Try these one at a time, in this order.

1. **Lower your water's mineral content** — About 20% fewer minerals — 150 to 120 ppm, say. Softer water extracts more gently, and with less buffering on the acidity it reads cleaner and brighter.
2. **Try a different water profile** — Last resort. A new water changes several flavours at once, which makes it hard to tell what did what — so it comes after every single-variable change has had its go.

## Cold brew: what to change

Cold brew. Try these one at a time, in this order.

1. **Lower your water's mineral content** — About 20% fewer minerals — 150 to 120 ppm, say. Softer water extracts more gently, and with less buffering on the acidity it reads cleaner and brighter.
2. **Try a different water profile** — Last resort. A new water changes several flavours at once, which makes it hard to tell what did what — so it comes after every single-variable change has had its go.

## Worth knowing

- Very occasionally, salty reads come from extreme under-extraction on a very light roast. If the cup is also sour and thin, try the sour coffee guide first.

## Change one thing at a time

It's tempting to grind finer *and* raise the temperature *and* pour differently. Then the next cup is better or worse and you don't know why. One change per brew is slower on paper and much faster in practice. The [full dial-in guide](https://cuplift.app/dial-in) covers the order to fix things in when there's more than one problem.

## Questions

### Why does my coffee taste salty or metallic?

A salty, metallic or mineral taste almost always comes from the water, not the coffee. Salty, metallic or mineral flavours almost always come from the water. Too many dissolved minerals — or the wrong mix of them — sit on top of the coffee and flatten everything else.

### How do I fix salty or metallic coffee?

Change one thing per brew. On a pour over: Lower your water's mineral content, then try a different water profile. On an AeroPress, French Press or Hario Switch: Lower your water's mineral content, then try a different water profile.

## Other tastes to fix

- [Why does my coffee taste sour? How to fix it](https://cuplift.app/fix/sour-coffee)
- [Why does my coffee taste bitter? How to fix it](https://cuplift.app/fix/bitter-coffee)
- [Why does my coffee taste dry, chalky or astringent?](https://cuplift.app/fix/astringent-coffee)
- [Why does my coffee taste weak or watery?](https://cuplift.app/fix/weak-coffee)
- [Coffee too strong or heavy? How to lighten it](https://cuplift.app/fix/strong-coffee)
- [Why does my coffee taste flat or dull?](https://cuplift.app/fix/flat-coffee)