Boston Baked Beans
["1 lb. dry navy beans", "1/2 tsp. baking soda", "1 large yellow onion", "4 Tbsp. sugar", "1/3 c. molasses", "1 tsp. dry mustard", "2 tsp. salt", "1/4 tsp. pepper"]
["Cover beans with water.", "Add baking soda and bring to a boil. Cover and let stand 30 minutes."]
["dry navy beans", "baking soda", "yellow onion", "sugar", "molasses", "dry mustard", "salt", "pepper"]