Name: Boston brown bread
Prep time: 20 min
Cook time: 180 min
Yield: 1 medium loaf, about 6 to 8 servings
Cuisine: American
Ingredients: 75g rye flour; 120ml buttermilk; 120ml treacle; 1/4 tsp bicarbonate of soda; 1/2 tsp fine salt; 1/2 tsp baking powder; 35g white bread flour; 35g wholemeal flour; 85g stone-ground polenta; 1 large egg, beaten