Start by preheating your oven to 350°F. Prepare a loaf pan of size 8.5"x4.5" by spraying it with cooking spray and setting it aside.

In a medium bowl, combine the flour, sugar, baking soda, and salt, whisking them together. This creates your dry mixture for later use.

In a larger mixing bowl, beat the egg until fully blended. Then incorporate the water, orange juice, melted butter, vinegar, and grated orange rind, whisking until the mixture is uniform.

Gradually add the dry flour mixture to the wet ingredients, mixing gently until just combined. Fold in the cranberries and walnuts, being careful not to over-mix. You can reserve some walnuts for topping if desired.

Pour the batter into the loaf pan you prepared earlier. Bake in the preheated oven for about 70 minutes, or until the top is golden brown and a toothpick inserted comes out clean.

Once baked, allow the bread to cool in the pan for about 10 minutes before transferring it to a wire rack to cool completely. Pair it with tea or coffee for a delightful treat!