Skip to main content

This is how to sharpen a serrated knife the right way

This fearsome blade needs a little extra love

Knife blades closeup
stevepb/Pixabay

In every good set of kitchen knives, there is one particular blade that most people both love and hate. We love it for its ability to flawlessly slice through foods like crusty baguettes and plump, ripened tomatoes. Its jagged edge gives us smooth cuts through otherwise tricky-to-slice ingredients, all while appearing rather fierce in the process. But this knife can be desperately infuriating in its trickiness to sharpen. This is the serrated knife – a fiercely toothy blade with a saw-like edge.

Recommended Videos

Serrated knives come in all sizes for a variety of kitchen tasks. Their toothy edge is perfect for many culinary uses, allowing for crisp, clean cuts without tearing or squashing the ingredient’s often tender interior.

But when it comes to maintaining this rather fearsome blade, things can get a bit tricky. Unlike the smooth, even surface that most blades provide, the serrated edge of these knives requires a slightly different sharpening process. While many modern electric knife sharpeners feature a serrated knife slot, these aren’t often the most precise and can actually damage your blade if you aren’t especially careful. While it does take a bit more time and some patience, the most effective way of sharpening a serrated knife is with a ceramic honing rod.

How to sharpen a serrated knife

Man slicing bread
Drazen / Adobe Stock

Before beginning the sharpening process, be sure to start with a clean, dry knife, a prepared whetstone (or sandpaper), and a towel for wiping your blade.

  1. Find the beveled side: Every serrated knife has a flat side and a beveled side. The beveled side reveals a slight angle on the side where the blade has been carved to form the serrated edge, which you will be sharpening.
  2. Sharpen: Using extreme caution, place the rod flat against the angle of the beveled edge, then run the rod through the dip toward the cutting edge. Repeat this process with every dip in the blade’s edge.
  3. Clean: Tiny pieces of metal will collect on the flat side of the knife as it is sharpened. These are best removed with a whetstone or, more easily, with fine-grit sandpaper. Wipe the blade with a dry towel and store your knife properly.

Serrated knife tips:

  • Because there aren’t any shortcuts in sharpening a serrated knife, fewer serrations are easier to maintain. When purchasing your knife, you may consider finding one with fewer serrations for both ease of sharpening and cleaning.
  • Most knives become dull not from slicing and chopping food but because of their constant contact with your cutting board. Because of the way serrated knives are used, they seldom run along the cutting board’s surface and, therefore, remain sharper for longer. Because of the more delicate design of the serrated knife, though, it can’t withstand constant sharpening. Try to sharpen only when the knife is getting noticeably duller.
Lindsay Parrill
Lindsay is a graduate of California Culinary Academy, Le Cordon Bleu, San Francisco, from where she holds a degree in…
How to make instant coffee taste better: Simple tricks for a better brew
Exploring water temperature, mixing techniques, and more
instant coffee powder

Many regular coffee drinkers view instant coffee as inferior, arguing that its taste lacks the freshness and flavor of freshly brewed coffee. While there's plenty of truth to this, I still believe there's a time and a place for instant coffee. For many coffee drinkers, instant coffee offers a convenience and affordability that ground or whole-bean coffee can't. Luckily, inquiring coffee minds across the world have wondered if it's possible to make instant coffee better. From adding milk to adjusting the way you stir, here's what to know about how to make your instant coffee taste better.

How to make instant coffee taste better

Read more
Don’t be afraid of using Scotch in cocktails – these bartenders show you how
Beatnick on the River

As today is National Cocktail Day, lots of us will be reaching for our home bars to try out something new. That could be working with a new spirit or an unusual liqueur -- or even digging in the garden for some fresh herbs to add to a mixing glass. But there's one spirit which plenty of people enjoy drinking but rarely mix with, and that's Scotch.

Scotch is most often enjoyed neat, and it used to be the case that even thinking about mixing with it was considering wasteful and unsophisticated. But that time has passed, and now plenty of bartenders and experts are interested in what this powerful, smokey whisky style can add to a cocktail.

Read more
The simple science behind how to cook medium steak
A foolproof guide to perfect doneness
Steak levels of doneness

Every backyard grill master has their version of steak perfection. For me, that perfect middle ground came into focus the day a guest asked, “Can you make mine medium?” The slight panic was real. I had always shot for medium-rare or well-done — I didn't even know there was an in-between.

But learning how to cook steak medium turned out to be less about guesswork and more about a few reliable cues and a good meat thermometer. Cooking steak to a juicy medium pink center, warm throughout, and just the right touch of resistance, means paying attention to detail from start to finish.

Read more