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Monday, March 23, 2026

Canning Bread in Jars: Step by Step Instructions

Estimated reading time: 7 minutes

Canning Bread in Jars: Step by Step Instructions

Home canning bread is a clever way to bake small loaves directly in glass jars for longer storage. It is simple to make and tastes amazing. This version uses spelt flour, mixed grains, apple cider vinegar, and yeast to create a soft, flavorful bread that is baked right in the jar, sealed while hot, then processed again for longer keeping.

Before getting started, there is one important note: canning bread can be risky and is not USDA approved. Home-canned bread is not considered a standard tested canning recipe. That said, this particular method is meant to be good for up to 12 months when made exactly as shown, though you should use your own judgment and inspect your bread before eating it.

I found this particular tutorial on the YouTube channel Bread & Buns. It's called atomic bread, and you can watch the video and and read the instructions below.


How to Make Canned Bread in a Jar

Ingredients:

  • 500 g spelt flour
  • 350 g lukewarm water
  • 2 tsp salt
  • 2 tbsp apple cider vinegar
  • 10 g vanilla sugar
  • 1 yeast cube
  • 90 g mixed grains

Equipment:

  • 750 ml glass jars
  • Oil for greasing the jars
  • Clean cloth or paper towel
  • Lids and rubber seals
  • Large baking dish
  • Oven
  • Mixing bowl

1. Dissolve the yeast

Pour the 350 g lukewarm water into a mixing bowl. Add the yeast cube and the vanilla sugar, then stir until the yeast begins to dissolve. You can use a blender to help break up the yeast cube.

Dissolving the Yeast

2. Add the dry ingredients

Add the spelt flour and mixed grains to the bowl.

Adding Spelt and Grains

3. Season the dough

Mix in the apple cider vinegar and salt. Stir or knead until you have a uniform bread dough.

Mixing Bread Dough

4. Prepare the jars

Take your 750 ml glass jars and brush the inside lightly with oil. This helps keep the bread from sticking.

Preparing the Jars

5. Fill the jars

Spoon the dough into the jars, filling each one only about one-third full. This leaves room for the dough to expand.

Press the dough down gently in the jar to remove trapped air pockets.

Dough in the Jar

6. Clean the rims

Wipe the rim of each jar thoroughly so the sealing surfaces are clean.

Cleaning the Rims

7. Let the dough rest

Cover the jars and let the dough rest for 30 minutes.

Letting Jars Sit

8. Bake the bread

Bake the jars at 200°C for 50 minutes.

Baking Bread in the Oven

9. Warm the rubber seals and lids

Shortly before the bread is done, place the rubber seals and lids in hot water. This helps prevent the jar from bursting when sealed.

Warming the Seals

10. Seal immediately after baking

As soon as the jars come out of the oven, attach the hot rubber seals and lids and close the jars immediately.

At this point, the keep for up to 12 weeks. To make it last longer, you'll need to follow the additional steps (starting with step 12), but go ahead with step 11 first.

Sealing After Baking

11. Cool the jars upside down

Turn the sealed jars upside down and let them cool.

Letting Bread Cool

Extra Step for Longer Storage

If you want the bread to keep for up to 12 months, the tutorial includes one more oven-processing step:

12. Water-bath style oven processing

Fill a baking dish with about 4 cm of hot water. Place the already sealed jars into the dish.

Bread in Glass Dish

13. Heat again

Put the dish in the oven and process the jars for 45 minutes at 130°C.

Bread Back Into Oven

14. Remove and cool

After processing, remove the jars and let them cool fully.

The tutorial states that after this step, the bread can be stored for up to 12 months.

Canned Bread in Jars

Storage and Safety Notes

Because this is a bread-in-a-jar recipe, it is important to be cautious.

  • Canning bread is risky and not USDA approved.
  • This is not a standard tested home-canning method.
  • Always check jars before eating. If a jar has an off smell, mold, leakage, an unsealed lid, or any unusual appearance, discard it.
Sliced Canned Bread on Plate

Final Thoughts

Atomic bread is an interesting homemade pantry project for anyone who likes long-storage foods and small-batch baking. The process is straightforward: mix the dough, fill greased jars one-third full, bake, seal, and process again for longer shelf life.

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The post Canning Bread in Jars: Step by Step Instructions appeared first on Homestead Survival Site.



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