Remember the glass jars in this post? They are Weck canning jars. Weck jars are the German equivalent to American Mason jars, the only difference is that Weck jars have glass lids and rubber rings. Usually these jars are used for home canning and preserving fruit, vegetables, jams, and jellies. But you can also use special Weck glasses to bake and preserve cakes.
A couple of weeks ago I ordered 6 of the 1/2 litre jars for preserving cakes. They say that you can store your cakes in these jars for up to 6 months, but I guess mine will last only a couple of days.

[This picture shows the cake right after it was removed from the jar. The flour, which prevents the cake from sticking to the glass jar, can be removed easily.]
Hazelnut Cakes with Marzipan and Chocolate (for two jar cakes)
1 1/4 cups flour
1 t baking powder
1 pinch salt
3 1/3 T melted coconut fat (or margarine)
3 T soy yoghurt
1 t vanilla extract
1/2 t almond extract
3/4 cup brown sugar
6 T freshly brewed, strong coffee
1/2 cup chopped hazelnuts
1/2 ritter sport marzipan chocolate bar (1.8 oz) or regular semisweet chocolate, chopped.
Combine flour, baking powder, sugar, and salt in a bowl. In a second bowl, mix coconut fat, yoghurt, extracts, and coffee. Pour wet into dry ingredients and stir to combine. Fold in nuts and chocolate.
Preheat oven to 350°F.
Grease the canning jars and flour them. Divide batter between two 1/2 litre jars. Fill the jars only halfway full. Bake them below the middle rack for 30-35 minutes, or until an inserted toothpick comes out clean.
Meanwhile put the glas lids and rubber rings (only if you have Weck glasses) in hot water. When the cakes are done, seal them immediately with a wet rubber ring, the dry lid, and secure with 2-3 canning clamps. Before you do this, please make sure that the glass rims are completely clean. Handle the hot glasses with great care.
If you use other glasses than weck, follow the manufacturers instructions for canning. (Canning these cakes works exactly like canning fruit or vegetables.) Let the glasses cool completely. The vacuum which makes the preserving possible will develop while cooling down. For more information on canning cakes, you can also find some useful information here.
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German Version / Deutsche Version
Vor ein paar Wochen habe ich mir diese Weck-Gläser schicken lassen, mit denen man nicht nur Marmelade oder Obst einkochen kann sondern auch Kuchen. Der Kuchen ist darin angeblich bis zu einem halben Jahr haltbar. Um den Kuchen halbar zu machen, wird er im Ofen ohne Deckel gebacken und dann sofort mit Gummiring, Deckel und Klammern verschlossen.
Haselnuss-Kuchen mit Marzipan-Schokolade (für 2 1/2 Liter Weck Gläser)
150 g Vollkornmehl
1 TL Backpulver
1 Prise Salz
50 g geschmolzenes Kokosfett oder Margarine
50 g Sojajoghurt
1 Päckchen Vanillezucker
5-6 Tropfen Bittermandelaroma
150 g Vollrohrzucker
6 El frisch gebrühter, starker Kaffee
50 g grob gehackte Haselnüsse
50 g gehackte Marzipan-Schokolade
Mehl, Backpulver, Salz, Vanillezucker und Zucker in einer Schüssel mischen. In einer zweiten Schüssel Kokosfett, Kaffee, Mandelaroma und Joghurt verrühren und dann die flüssigen zu den trockenen Zutaten geben. Nüsse und Schokolade vorsichtig unterheben.
Ofen auf 180 ° C vorheizen. Zwei 1/2 Liter Weck-Sturzgläser einfetten und mit Mehl bestäuben.
Teig so auf die Gläser verteilen, dass diese zur Hälfte gefüllt sind. Die Ränder der Gläser sorfältig von eventuellen Teig- und Fettresten befreien.
Auf der untersten Schiene ca 30-35 Minuten backen oder bis an einem Holzstab (z. B. Zahnstocher), mit dem in den Kuchen gestochen wird, nichts mehr hängen bleibt. Inzwischen die Glasdeckel und zwei Gummiringe in heißem Wasser einweichen. Die Glasdeckel abtrocknen. Wenn der Kuchen fertig ist, die feuchten Gummiringe auf die Gläser legen, mit den Deckel verschließen und mit Klammern befestigen. Vorsicht, die Gläser sind sehr heiß!
Kuchen abkühlen lassen. Während des Abkühlens entsteht das Vakuum, welches den Kuchen haltbar macht. Mehr Informationen zum Kuchen einmachen gibt es hier und hier.



This is fun! It’d be perfect for mailing cakes.
By: Nicole on 18 October 2008
at 8:55 pm
That is so amazing – I don’t think I have ever seen anything like that. I have never seen those jars in the US – not even at The Container Store.
By: jennconspiracy on 18 October 2008
at 9:09 pm
What a great idea—and those perfectly shaped cakes look so yummy!
By: Ricki on 18 October 2008
at 9:16 pm
that is so unusual! i never thought of canning baked goods! i just throw em in the freezer if i need to…but i never need to because everything is eaten within 24 hours in my house!!
By: Virginia on 18 October 2008
at 9:24 pm
What an awesome idea!
By: chocolatecoveredvegan on 18 October 2008
at 9:32 pm
ABSOLUTELY brilliant idea, and gorgeous cake.
By: VeggieGirl on 18 October 2008
at 9:44 pm
That is so cool! Do you think it will work in any Weck glasses? Probably not because you can’t remove the lids? Awesome idea. That cake looks delicious! It would make such a great gift… Are these the ones from the ‘mold’ line?
By: Sanja on 18 October 2008
at 9:55 pm
That cake is nothing short of a work of art, Mihl! I don’t think I would need to can YOUR cakes, they would magically disappear into my belly within minutes!
By: River (Wing-It Vegan) on 19 October 2008
at 12:29 am
Wow, that’s a really fantastic idea, not to mention how delicious the cake looks. I think I might have to use this as an excuse to get some new jars.
By: Caty on 19 October 2008
at 12:33 am
you come up with the coolest ideas, Mihl! I loved seeing words in German in your latest comment to me too. hooray!
By: Celine on 19 October 2008
at 5:40 am
I’m so excited you tried this! I have about four sites bookmarked where they explain how to do this – I want to try it for holiday gifts for people. I’ll let you know how it goes!
By: shellyfish on 19 October 2008
at 9:31 am
Sanja, it doesn’t work with every glass as you will have problems to remove the cake from the jar. The most important thing is to use a straight jar, so that the cakes can easily be removed.
shellyfish – Holiday gifts sound like an awesome idea!
By: mihl on 19 October 2008
at 12:10 pm
I love the cakes! but seriously, how long can I wait to eat a cake? 2 days? haha
By: Alice (in Veganland) on 19 October 2008
at 2:16 pm
Damn this Cake sounds and looks DELICIOUS!!
Nice idea baking it in a jar.
By: Jeni Treehugger on 19 October 2008
at 4:18 pm
Isn’t it so much fun to bake cakes in jars? This is the best way to say happy birthday to someone living far away, if you ask me!
By: BitterSweet on 19 October 2008
at 4:22 pm
That is the cutest and most delicious looking ever! I’ve never baked a cake in a jar – sounds fun!
By: Diann on 19 October 2008
at 4:32 pm
Wow, love your idea. And cakes that have hazelnuts, chocolate and marzipan involved can’t go wrong!
By: tofuparty on 19 October 2008
at 8:03 pm
cake in a jar has got to be some fantastical stuff! i love the idea – and i’m loving your recipe too, Mihl! mmmmmmmmmmm!
By: jessy on 20 October 2008
at 2:42 am
I’ve never heard of this..what a great idea and your flavors are my favorite combination! I will try this!!
By: Amanda on 20 October 2008
at 3:12 pm
How cool! I had no idea you could can cakes. Pretty neat!
By: baliwhat on 20 October 2008
at 8:16 pm
I am in love with the idea of cake in a jar! What a fun Christmas gift. I’m bookmarking this post now….
By: Vegannifer on 20 October 2008
at 8:54 pm
Canned cake, where have you been all my life? This choc hazelnut version sounds like perfection.
By: terryromero on 20 October 2008
at 10:32 pm
this sounds so neat and that cake sounds so good. It makes sense that canned cake works well as you can buy canned brown bread. I want to try this.
By: bex on 21 October 2008
at 3:24 am
That is the coolest thing ever. I think I’ve heard it all. yummy!
I totally want some of those jars.
By: Bethany on 23 October 2008
at 2:16 am
that is so cool! and that cake… looks scrumptious. :O~~~~
By: Liz² on 7 November 2008
at 4:28 am