🌎 The World Cookbook

2 cups boiling water
5 teaspoons baking soda
5 cups all-purpose flour
1 quart buttermilk
4 cups bran cereal (such as Kellogg's(R) All-Bran(R))
2 cups bran flakes cereal
1 cup chopped walnuts
1 cup white sugar
1/2 cup vegetable oil
1/2 cup butter, melted
4 eggs, beaten
2 teaspoons ground cinnamon
1 teaspoon salt
1/2 teaspoon ground ginger
1/2 teaspoon nutmeg

Combine boiling water and baking soda together in a large bowl. Let cool slightly. Stir flour, buttermilk, bran cereal, bran flakes, walnuts, sugar, oil, butter, eggs, cinnamon, salt, ginger, and nutmeg into water-baking soda mixture until just combined. Cover bowl with plastic wrap and refrigerate muffin batter for at least 8 hours or overnight. Preheat oven to 375 degrees F (190 degrees C). Grease 60 muffin cups or line with paper muffin liners. Pour batter into prepared muffin cups 1/2 full. Bake muffins in the preheated oven until the tops spring back when lightly pressed, about 20 minutes.