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Allsum 18-Inch Bamboo review

A single 18 × 12 in bamboo board at 3.6 lb (1.7 kg), pre-seasoned with mineral oil and not for the dishwasher.

Photo : Stefan Vibes, Unsplash

What the maker puts in writing

  • “18″ x 12″, large and stable, won’t slide on counter while using it. Can be served as a large charcuterie board”
  • “100% organic bamboo, which is durable, resilient and eco-friendly. Won’t dull the knife”
  • “Every cutting board is nicely polished and per-seasoned with food grade mineral oil before shipment. Smooth, no splinters”
  • “Built-in juice groove helps catching juice from running on counter; inner handle will make it easier to be carried around”
  • “Wash it under running water and leave it air dry. Please DONOT pass it in a dishwasher. Keep it away from humid environment when storage”

The clearest care instruction on this shelf

“Please DONOT pass it in a dishwasher. Keep it away from humid environment when storage.”

The dishwasher ban is right, and for bamboo more than most: a bamboo board is strips of culm glued side by side, and a hot alkaline cycle with a long damp cool-down attacks the glue lines until the board opens along a joint.

The second sentence is the one nobody else gives, and it is where boards actually die.

A board cups when one face takes up more water than the other — and the way to guarantee that is to stand a damp board flat against a wall or lay it on a countertop. One side breathes, the other does not, and within a week it rocks.

That is also why the two most expensive boards on this shelf include a stand, and why both name drying rather than tidiness as the reason: WALDWERK (“for quick drying”) and EDELHAUS (“keeps your boards dry”).

On a single board, stand it on edge.

Eighteen by twelve, and nineteen millimeters

The largest single board here, and the most substantial bamboo:

  • 0.75 in (19 mm) — this
  • 0.79 in (20 mm) — Farberware, Hilmon
  • 0.39 in (10 mm) — Royal Craft Wood’s two-piece
  • 0.35 in (9 mm) — Fibogollo

And 3.6 lb (1.7 kg) — nearly the mass of Royal Craft Wood’s entire three-board set, which weighs 4.1 lb (1.9 kg).

That mass is the stability claim doing real work: large and stable, won’t slide on counter. Only EDELHAUS on this shelf has non-slip feet; everything else relies on weight, and a light board on a wet countertop moves.

Pre-seasoned with mineral oil

Which is a finish you can renew. Oil soaks into the fiber, so re-oiling it every month or two keeps the board going for decades. A varnish or lacquer sits on top, looks perfect, and then chips — after which water goes underneath and only stripping the board will fix it.

Fibogollo also states mineral oil. WALDWERK uses natural beeswax and is the only listing here to reject the alternative by name: no cheap varnish or plastic coating. Four boards on this shelf name no finish at all.

One board or a set

The set argument is separation — a small board for fruit, a big one for raw meat.

The single-board argument is that most of the time you want space, and that the “large” board in a cheap three-piece set is usually 15 × 10 inches. Eighteen by twelve takes a whole chicken or a roast to carve.

For comparison on price per board: Farberware’s four-piece bamboo set is $4.25 a board, AIDEA’s three acacia $6.66, and this one $13.97.

What is not published

Not stated as reversible — Farberware is the only board on this shelf that is, and it gives the right reason: one side for raw, one for bread.

No stand. No non-slip feet. No warranty — Royal Craft Wood offers one year and WALDWERK sixty days.

Availability

On sale at about $14 on Amazon.com when we read the listing on October 31, 2026.

Price and availability were read on Amazon.com on October 31, 2026; both move.

Prices quoted in this text are dated readings and can differ from the live price in the buy box.

What we rate, and what we do not

Strengths

  • The only listing on this shelf that forbids the dishwasher outright, and the only one that mentions humid storage
  • Nineteen millimeters and 1,656 grams — more substantial than any bamboo board here, and heavy enough not to slide
  • Pre-seasoned with food-grade mineral oil, a finish that can be renewed rather than one that chips

Compromises

  • One board for thirteen dollars, where a four-board bamboo set here is $16.99
  • Not stated as reversible, which only one board on this shelf is
  • No stand, no non-slip feet and no warranty

Specifications

Size18 × 12 in
Thickness0.75 in (19 mm)
Weight3.6 lb (1.7 kg) — nearly the mass of a three-board bamboo set here
Material100 percent organic bamboo
FinishPolished and pre-seasoned with food-grade mineral oil before shipment
SurfaceSmooth, stated free of splinters
Juice grooveBuilt in
HandleInner handle, for carrying
StabilityStated large and stable, and not to slide on a counter
DishwasherExplicitly forbidden by the maker
StorageKeep it away from a humid environment — the only such instruction on this shelf
Also forServing as a large charcuterie board
Dimensions18 × 12 × 0.75 in (457 × 305 × 19 mm)
ReversibleNot stated
WarrantyNot published by the maker
Amazon referenceB0C7Q51PL1
EAN0746626822748

The questions that come in

Why is the humid storage warning important?

Because it is where boards warp, and no other listing on this shelf mentions it. Allsum writes: "please DONOT pass it in a dishwasher. Keep it away from humid environment when storage." A wood board cups when one face takes up more moisture than the other — and the classic way to achieve that is to stand a damp board flat against a wall or lay it on a countertop, so one side breathes and the other does not. Within a week it rocks. The answer is to dry both faces, which is exactly why the two most expensive boards here — WALDWERK at $59.99 and EDELHAUS at $44.95 — both include a stand and both name drying rather than tidiness as the reason. On a single board, stand it on edge against a tile.

Is one board better than a set?

At eighteen inches, often yes — and this is the largest single board on the shelf. The case for a set is separation: a small board for fruit, a large one for raw meat, which is the argument the three-board sets here make. The case for one big board is that most of the time you need space. Eighteen by twelve inches takes a whole chicken, a roast to carve, or a full tray of vegetables without crowding — and the two most common complaints about cheap board sets are that the "large" one is only 15 × 10 and that you end up using one board for everything anyway. At 3.6 lb (1.7 kg) this also weighs nearly as much as Royal Craft Wood’s entire three-board set (4.1 lb (1.9 kg)), and the mass is what stops it moving.

Does "organic bamboo" mean anything?

Not much, and the material question is more interesting than the adjective. Bamboo is a grass, not a wood: boards are made by slicing culms into strips and gluing them side by side, so every bamboo board is a laminate with glue lines running through it. That is why the dishwasher ban here matters more than it would on solid timber — a hot alkaline cycle attacks the adhesive and the board opens along a joint. Bamboo is also harder than most hardwood, which this listing presents as "durable, resilient" and then pairs with "won’t dull the knife". Those claims pull against each other; Farberware on this shelf states both in one sentence. The solid acacia boards here — AIDEA, WALDWERK, EDELHAUS — have no glue lines at all.

Our score

8.1/ 10

The only listing here that forbids the dishwasher in capitals and then adds the instruction nobody else gives: keep it out of a humid cabinet. Eighteen by twelve inches, nineteen millimeters thick, 1,656 grams.

This one against the other cookware and knives

Close prices, same category: comparable cookware and knives. We keep only the specifications all of them publish, because a column with gaps compares nothing.

Model Price MaterialDimensions
Allsum 18-Inch Bamboo $14 100 percent organic bamboo18 × 12 × 0.75 in (457 × 305 × 19 mm)
ROYAL CRAFT WOOD Bamboo 2-Piece $15 Minimally refined, high-quality natural bamboo10 × 0.39 × 15 in (254 × 10 × 381 mm)
Kesper 12.6 × 8.3 × 0.6 in (32 × 21 × 1.5 cm) acacia $16 FSC-certified acacia wood12.6 × 8.3 × 0.6 in (32 × 21 × 1.5 cm)
Farberware Bamboo 4-Piece Reversible $17 Bamboo, stated harder and more durable than traditional wood14 × 11 × 0.79 in (356 × 279 × 20 mm)

What sets the models apart, in cookware and knives

  • If price decides: this model, at $14.
  • Highest Dimensions in the table: this model (18 × 12 × 0.75 in (457 × 305 × 19 mm)).
  • This model holds the table’s highest figure for Dimensions.

What use this one answers, among cookware and knives

One good large board — eighteen inches, nineteen millimeters, and honest care instructions

Add-ons stated to fit

Listed because the add-on names this pan as a fit.

Sources

Specifications: the manufacturer sheet for cookware and kitchen knives and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.

What we judge these cookware and knives on

Prices quoted in these summaries are dated readings. The live price is shown next to each product.