John Dwight & Co. became the first company to make and sell baking soda in the United States .
Dr. Church joined with his brother - in - law , John Dwight , and in 1847 the pair began manufacturing baking soda in Dwight 's Massachusetts kitchen .
Dwight       became the first company to make and sell baking soda in the United States .
Dr. Church joined with his brother - in - law , John Dwight , and in 1847 the pair began manufacturing baking soda in Dwight 's Massachusetts kitchen .