Analysis by Valery Grin · · updated October 3, 2026
Rösle VARIO 25424: 30 cm cordierite pizza stone
The small size that fits where 35 or 38 cm stones will not: 33 cm kamados and thereabouts
From€19
Reference price on Amazon (June 2026) · subject to change
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- Diameter
- 30 cm
- Weight
- 2.1 kg
- Material
- Cordierite
- Temperature range
- ≤ 400°C
Quick answer
Worth it if your kamado is small and stones of 35 cm or more will not go in. It is a 30 cm cordierite stone, 1.5 cm thick and 2.1 kg, rated to 400 °C by the listing. It takes pizzas of about 25-28 cm (our estimate). With a Large or bigger, larger stones exist.
Cordierite, 30 cm, 1.5 cm thick and 2.1 kg. It is smaller than the 35 and 38 cm stones in our catalogue, which is why it suits a MiniMax, a Joe Jr or another compact kamado.
The Rösle VARIO 25424 is a round cordierite stone. The listing gives 30.51 × 30.51 × 1.5 cm, 2.1 kg and a heat resistance of 400 °C. It says it works on a gas or charcoal barbecue and in an oven, for pizza, tarte flambée, bread, rolls or quiche, and that it fits Rösle's VARIO grate system, which is where the name comes from.
What cordierite promises is the usual: it stores heat, spreads it across the base of the dough and absorbs moisture, so the underside comes out crisper. The listing adds that, with the lid closed on a gas or charcoal barbecue, temperatures well above a domestic oven are reached. That is exactly what makes sense on a kamado: the ceramic holds the heat and the stone hands it to the dough. In practice you use it for indirect cooking, on a deflector or plate setter, and preheat it with the whole kamado stabilised before the first pizza goes on. To start, the margherita and the guide to making pizza in a kamado are the quickest way in.
The reason to shortlist this stone is the size. The round GOURMEO in our catalogue is 35 cm and the rectangular Navaris, Onlyfire and Blumtal stones are 38 × 30 cm: none of them fits a grate of about 33 cm. For the Joe Jr there is Kamado Joe's official SoapStone, but that is soapstone, not cordierite. At 30 cm, on a grate of about 33 cm (that of the MiniMax and Joe Jr) only about 1.5 cm is left on each side, and you still have to check that your deflector and the height of the chamber let the lid close; on the Bono Minimo, which the catalogue lists at 40 cm, measure your grate before ordering. On a 46 cm Large it fits with room to spare, but there you have more options. And mind the dough: on 30 cm of stone, a pizza of about 25-28 cm is sensible (our estimate, not a figure from the listing).
On the VARIO system: the listing says the stone fits those grates, but not that it needs them. Geometrically it sits loose on the grate or deflector of the kamado, without Rösle's VARIO grate, though that is our reading and not a Rösle instruction.
The drawbacks are information. The listing does not explain how to clean it, does not say whether it withstands thermal shock or tolerates direct flame, and mentions no warranty. With cordierite the usual rule is to avoid soap and not to wet it hot, but that is a general rule, not something from this listing.
Verdict: a sound cordierite stone in an uncommon size, worth it if your kamado is small.
A 30 cm cordierite stone with 693 reviews and a 4.5 average. Its appeal is the size for small kamados; check the fit on your own unit.
Editorial rating from spec sheet, measurements and kamado fit · not a hands-on test
Pros
- 30 cm cordierite: smaller than the catalogue's 35 cm GOURMEO or 38 × 30 stones
- Listing: works on a gas or charcoal barbecue and in an oven, not tied to one system
- 1.5 cm thick and 2.1 kg: enough mass to store heat
- 4.5 average rating across 693 Amazon reviews
Cons
- The listing mentions no warranty and no compatible kamado model
- Heat resistance of 400 °C: short for wood-fired Neapolitan (over 400 °C)
- Cleaning, thermal shock, direct flame: the listing says nothing
Who it's for
For anyone with a MiniMax, a Joe Jr or another compact kamado who wants to bake pizza on cordierite without a 35 cm stone overhanging the grate.
Not for
If your kamado is a Large or bigger, a 35 or 38 cm stone gives you more surface. Nor if you want wood-fired Neapolitan, which calls for more than the listing's 400 °C.
Specifications
- Diameter
- 30 cm
- Weight
- 2.1 kg
- Material
- Cordierite
- Temperature range
- ≤ 400°C
As an Amazon Associate, mikamado.es earns from qualifying purchases. At no extra cost to you.
Goes well with
G.a HOMEFAVOR Perforated Aluminium Pizza Peel 22.8 cm
With a 30 cm stone the pizza runs to about 25-28 cm (estimate), and putting it onto a very hot surface without a peel is asking for burns. The HOMEFAVOR perforated peel, 22.8 cm according to the catalogue, fits easily within 30 cm of stone, though for 25-28 cm dough it is tight: stretch carefully or bake a little smaller. The perforations help shake off surplus flour. You buy it alongside the stone, not instead of it.
€33
Rösle Pizza Wheel Cutter
A freshly baked 25-28 cm pizza needs a clean cut before serving. Rösle's wheel, from the same brand as the stone, does it without a knife or scissors. It goes with any stone, this one included.
€22
WMF BBQ Heat-Resistant Leather Gloves 40 cm (Pair)
A 2.1 kg stone at oven temperature is handled with long gloves, not kitchen mitts. The 40 cm leather gloves in the catalogue cover a good part of the forearm and are just as useful for repositioning the deflector or the grate. They go with any stone, this one included.
€39
FAQ
Will it fit my kamado?
It depends on your grate diameter and what sits under the stone. It is 30 cm, so on the roughly 33 cm grate of the MiniMax and Joe Jr about 1.5 cm is left on each side, and you must check that the deflector and lid allow it to close. For the Bono Minimo the catalogue gives 40 cm without specifying the grate: measure it. On a 46 cm Large it fits with plenty of room, though you may prefer a bigger stone. The listing names no kamado model.
Do I need Rösle's VARIO grate?
The listing says the stone fits the VARIO grate system, but also that it can be used on the barbecue or in the oven, without tying it to that system. On a kamado it is placed loose, on the grate or deflector, without a VARIO grate. That reading is ours and not a Rösle instruction: if you want certainty, write to them before buying.
Does it go straight onto the coals?
We would not. The listing does not say it tolerates direct flame, and there is no reason to risk a 30 cm stone. The prudent route is indirect cooking: the stone on the deflector, the chamber stabilised and the stone preheated with the whole kamado. If in doubt, the guide to direct and indirect cooking explains how to set it up so the heat does not hit all at once.
How does it differ from the 35 cm round GOURMEO in the catalogue?
The diameter: 30 cm against 35 cm. Those five centimetres decide whether it fits a small kamado or the pizza overhangs the stone. The 35 cm GOURMEO gives more surface on a Large or a bigger kamado; the Rösle wins on the MiniMax, the Joe Jr and compacts. Both are cordierite, so the choice is one of size, not material. A compact 35.6 × 30.5 cm steel will not fit a 33 cm grate either: for a small kamado, the 30 cm stone is the one that fits.