Step 1: Preheat and Prepare

1. Preheat your oven to 375°F (190°C) if baking. For frying, heat oil in a deep fryer to 350°F (175°C).
2. Prepare your baking tools by greasing a donut pan or lining a baking sheet with parchment paper. If frying, ensure you have a slotted spoon and paper towels for draining.

Step 2: Mix Dry Ingredients

1. In a large mixing bowl, whisk together the dry ingredients:
   • 2 cups all-purpose flour
   • 1/2 cup cocoa powder
   • 3/4 cup granulated sugar
   • 1 teaspoon baking powder
   • 1/2 teaspoon baking soda
   • 1/4 teaspoon salt

Step 3: Blend Wet Ingredients

1. In a separate bowl, whisk together the wet ingredients:
   • 3/4 cup milk
   • 2 large eggs
   • 1 teaspoon vanilla extract
   • 1/4 cup melted butter or vegetable oil

Step 4: Combine Wet and Dry Mixtures

1. Gradually fold the wet ingredients into the dry mixture.
2. Mix gently until smooth, ensuring there are no lumps. Avoid overmixing to keep the donuts light and fluffy.

Step 5: Shape the Donuts

1. For baked donuts: Transfer the batter into a piping bag and pipe into a greased donut pan, filling each cavity about 3/4 full.
2. For fried donuts: Shape the dough into rings by hand or use a cutter.

Step 6: Bake or Fry

1. Baking: Bake for 10-12 minutes, or until a toothpick inserted into the donuts comes out clean.
2. Frying: Fry donuts for 1-2 minutes per side, until golden brown. Remove with a slotted spoon and drain on paper towels.

Step 7: Cool and Decorate

1. Let the donuts cool slightly on a wire rack.
2. Add your desired toppings, such as powdered sugar, glaze, or sprinkles.

Enjoy your freshly made cocoa donuts while warm or store them for later!