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This week, our rigorous testing pits a John Lewis chef's knife against a cheaper rival. Which one had the edge?
Natalie TurnerContent writer

Every fortnight, free Which? account owners are given an exclusive behind-the-scenes look at some of our members-only product reviews.

This week’s head-to-head puts two chef’s knives on the chopping block. One is a super sharp, well-balanced workhorse that won’t empty your wallet – the other is a pricier contender whose performance doesn’t quite match its price tag.


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At a glance: Kitchen Devils Control Large Cook’s Knife vs John Lewis Classic Cook’s Knife

Knives head to head

Kitchen Devils Control Large Cook's Knife (left)John Lewis Classic Cook's Knife (right)
Score98%59%
Comfort
Ease of use
Sharpness out of the box
Durability

Kitchen Devils Control Large Cook's Knife (Best Buy and Great Value)

Kitchen Devils knife

Available from Amazon (£15.21)

  • We like: Very comfortable handle, easy to use for all chopping tasks, maintains sharpness
  • We don’t like: Julienning and slicing could be slightly better

This Kitchen Devils knife was the sharpest out of the box and maintained its edge after we put it through a series of chopping tasks.

Our testers praised the comfortable handle, which felt perfectly balanced, and its curved bolster made it easy to grip.

It’s also less than half the average price of all the chef's knives we tested.

For Which? members only: read our full Kitchen Devils Control Large Cook's Knife review.

John Lewis Classic Cook’s Knife

John Lewis kitchen knife

Available from John Lewis (£30)

  • We like: Easy to use for precise chopping tasks
  • We don’t like: Uncomfortable handle, struggled to slice in a straight line, needed a sharpening top-up after our tests

For some of our testers, the hard handle and angular edges made this knife uncomfortable to hold. It struggled with most chopping tasks, particularly when trying to cut a butternut squash.

It’s also double the price of the Kitchen Devils knife, and a whopping six times pricier than the cheapest knife we tested.

For Which? members only: read our full John Lewis Classic Cook’s Knife review.

Our expert says:

Louise Sayers which market analyst

Our knife testing gets straight to the point – assessing the comfort, durability and sharpness of the UK’s bestselling chef’s knives. 

The Kitchen Devils knife was a cut above the rest, excelling in every test. It’s hard to fault, and is both a Best Buy and a Great Value pick. It’s also dishwasher-safe – a big plus.  

We were disappointed by the John Lewis knife. It struggled across the board – even chopping vegetables felt like hard work. At £30, we say save your money. We’ve tested plenty of cheaper knives that perform better. Which? members can see the full list in our guide to the best chef's knives.

Louise Sayers, Which? chef’s knives expert

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