Heat oven to 200°. Grease 2 loaf pans with butter. Whisk flours, baking powder, salt, and baking soda in a bowl. Stir in buttermilk and syrup to form a smooth dough. Pour dough into prepared pans and cover with aluminum foil; bake until cooked through, about 8 hours. Let cool slightly and unmold; serve with butter, if you like.
Ingredients
Serving People:
- Unsalted butter, for greasing and serving 1
- dark rye flour: 3 cups
- whole wheat flour: 1.5 cups
- baking powder: 4 teaspoon
- kosher salt: 2 teaspoon
- baking soda: 1 teaspoon
- buttermilk: 2 cups
- golden syrup: 1 cup
