In a large mixing bowl, combine 3 cups of all-purpose flour, 1 packet of active dry yeast, 2 tablespoons of sugar, and 1 teaspoon of salt. Gradually add in 1 cup of warm water, mixing with a wooden spoon until a sticky dough forms. Knead the dough on a floured surface for 8-10 minutes until it becomes smooth and elastic.

Once kneaded, shape the dough into a ball and place it in a greased bowl. Cover it with a clean kitchen towel and let it rise in a warm area for 1-2 hours, or until it has doubled in size.

After the dough has risen, punch it down to release the air bubbles. Divide the dough into two equal portions. In separate bowls, knead black food coloring into one half and red food coloring into the other until each portion is vibrantly colored.

On a floured surface, roll out each colored dough portion into rectangles, approximately 1/2 inch thick. Layer the red dough on top of the black dough, then gently twist both layers together to create a spiral effect.

Place the shaped loaf onto a lined baking sheet. Cover it lightly with a kitchen towel and let it rise for about 30 minutes.

Preheat your oven to 350°F (175°C). Once the oven is ready, bake the loaf for approximately 30 minutes until the top turns golden brown.

After baking, carefully remove the loaf from the oven and let it cool on a wire rack for at least 15 minutes before slicing.