Marbled Mocha Banana Bread

Ingredients

• Banana Batter

  • 1 cup (150 g) unbleached all-purpose flour
  • 1/2 cup (75 g) whole wheat flour
  • 1 tsp baking soda
  • 1/4 tsp salt
  • 4 very ripe bananas, thawed (see note)
  • 3/4 cup (160 g) sugar
  • 1/2 cup (125 ml) 2% to 5% plain yogurt
  • 1/4 cup (60 ml) vegetable oil
  • 1 egg

• Mocha Batter

  • 1/4 cup (20 g) instant coffee (see note)
  • 3 tbsp cocoa powder
  • 2 tbsp sugar
  • 3 tbsp (45 ml) milk, hot