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Instructions
- Preheat oven to 400°
- Spread the baking soda in a thin, even layer across a baking sheet
- Break up any large clumps with your fingers or a spoon
- Bake for 1 hour
- Stir the powder once or twice during the process (such as at the 20-minute and 40-minute marks) to ensure the heat reaches all of the baking soda evenly
- Cool completely inside the oven or out on the counter once the hour is finished
- in an airtight container to keep it from absorbing moisture from the air