Creating the Red Velvet Mocha Cake is a straightforward process. Follow these steps for a successful bake:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Grease and flour three 9-inch round cake pans.

2. Mix Dry Ingredients: In a large bowl, sift together the flour, sugar, baking soda, salt, and cocoa powder.

3. Combine Wet Ingredients: In another bowl, whisk together the vegetable oil, buttermilk, eggs, red food coloring, vanilla extract, and vinegar until well combined.

4. Combine Mixtures: Gradually add the wet ingredients to the dry ingredients, stirring until the mixture is smooth and free of lumps.

5. Pour Batter: Divide the batter evenly among the prepared cake pans.

6. Bake: Place the pans in the preheated oven and bake for 30-35 minutes or until a toothpick inserted in the center comes out clean.

7. Cool Cakes: Remove the cakes from the oven and allow them to cool in the pans for 10 minutes. Then, transfer them to wire racks to cool completely.

8. Prepare Mocha Frosting: In a large bowl, beat the softened butter until creamy. Gradually add the powdered sugar and cocoa powder, mixing well. Dissolve the instant coffee in heavy cream and add it to the frosting along with vanilla extract. Beat until fluffy and smooth.

9. Assemble the Cake: Place one layer of the red velvet cake on a serving platter. Spread a layer of mocha frosting on top. Repeat with the second layer. Add the final layer on top and frost the top and sides of the cake.

10. Decorate (optional): For a finishing touch, you can add chocolate shavings, cocoa powder dusting, or fresh berries on top of the cake.