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How to Slice Roast Beef Thin (Without a Deli Slicer)
How do you slice roast beef thin without a slicer? Chill the cooked roast completely, ideally overnight, then slice it across the grain with a long, very sharp slicing knife, using full strokes from heel to tip and letting the blade's weight do the work. Cold beef firms up, so you can cut slices nearly as thin as a deli. Our pick is the Slicing & Carving Knife 12", Shogun Series, ELITE ($199), a 12" slicer in Japanese AUS-10V core, 62+ HRC, 8–12° edge, 66-layer Damascus or hammered finish: long enough for one stroke per slice and sharp enough for very thin cuts.
Homemade roast beef for sandwiches is cheaper than deli meat and tastes better. The difference between good and great is in the slicing.
Warm vs cold slicing
| Warm (for dinner) | Cold (for sandwiches) | |
|---|---|---|
| Thickness | 1/4"–1/2" | As thin as possible |
| Rest or chill | Rest 10–20 min | Chill several hours or overnight |
| Juiciness | Very juicy | Firm, neat slices |
| Best cuts | Rib, sirloin, tenderloin | Eye of round, top round |
Step by step
1. Chill it
Wrap the cooled roast tightly and refrigerate for several hours or overnight. Cold meat is the secret to thin slices.
2. Find the grain
Look at the surface for the direction of the muscle fibers. On a round roast they usually run the length of the roast, so you'll slice crosswise.
3. Make a flat base
If the roast rolls, trim a thin slice off one side and set it on that flat face.
4. Slice with the full blade
Set the heel of the knife on the far edge and draw it toward you in one long stroke, keeping light pressure. For the thinnest slices, keep the blade nearly vertical and move it in tiny increments.
5. Stack and store
Layer slices with parchment, wrap tightly and refrigerate. Use within a few days.
What makes slices tear
- Warm meat. Chill it.
- A short or dull knife. You end up sawing.
- Too much pressure. Let the edge cut.
- Slicing with the grain. Slices fall apart along the fibers.
Which roast to use
Lean, uniform cuts like eye of round and top round slice most neatly and are the classic choice for sandwich roast beef. Fattier roasts like ribeye taste richer but are harder to slice paper-thin. Whatever you choose, cook it to your preferred doneness and let it cool before chilling.
Safety tips
- Work on a heavy board with a damp towel underneath so it can't slide.
- Keep your guiding hand flat and well behind the edge.
- Use long strokes rather than pressing down hard.
- Hone the edge before you start; a sharp knife needs less force and slips less.
More slicing guides: how to slice pastrami and how to slice London broil.
Our picks
Slicing & Carving Knife 12", Shogun Series, ELITE ($199). Spec sheet: Japanese AUS-10V core, 62+ HRC, 8–12° edge, 66-layer Damascus or hammered finish. A 12" slicer for thin sandwich slices.
Slicing & Carving Knife 12", Gladiator Series, NSF Certified ($99). Spec sheet: German X50CrMoV15 steel, 54–56 HRC, 16–18° edge, NSF certified. A tougher German-steel slicer at a lower price.
FAQ
What knife is best for slicing roast beef thin?
A long, very sharp slicing knife. The Dalstrong Shogun Series 12" Slicing & Carving Knife ($199) has a hard AUS-10V edge that cuts thin slices in one stroke.
How do you slice roast beef thin without a slicer?
Chill it overnight, then slice across the grain with a long, sharp slicer.
Should roast beef be cold to slice?
For thin sandwich slices, yes. Slice warm for thicker dinner slices.
What's the best roast for sandwich roast beef?
Lean, uniform cuts like eye of round or top round.
How long does sliced roast beef last?
A few days in the fridge, wrapped tightly.
