Ensure to preheat your oven to 325 degrees Fahrenheit.
Then, prepare a large bowl and place the butter. After that, cream the butter using an electric mixer attached with a paddle attachment. Afterward, beat for two minutes. Or beat until the butter becomes lighter in color.
Next, add the sugar to the butter. And beat the mixture for another two minutes until combined and become fluffy.
Afterward, gradually add the eggs. Then, make sure to put the eggs one at a time. And mix the mixture after each addition of the eggs. After that, scrape the bowl's sides and bottom with a rubber spatula to combine the mixture properly.
After that, put the flour in a different bowl, then add the salt. With that, make sure to whisk together. Next, add the flour mixture to the butter and egg mixture in increments.
Then, set your electric mixer on low speed. And gradually add the cup and two tablespoons of orange soda until well combined. After that, add the orange food coloring if you like a richer color for your pound cake. Afterward, add the orange zest to heighten up the orange flavor of the cake.
Next, use the nonstick cooking spray. And grease generously in your bundt pan. Then, pour your orange soda cake batter into the bundt pan. After that, even it out using an offset spatula.
Afterward, bake your cake inside the oven for about an hour. Or bake it until your cake cooks thoroughly. To check the cake if it is ready, you can try sticking a toothpick in your cake. And when you pull out the toothpick, and it comes out clean, your cake cooked completely.
When your cake is ready, remove the bundt pan from the oven. After that, let it cool down inside the pan for about five minutes.
After five minutes, gently turn out your cake into a cooling wire rack. Then, ensure to let it cool completely. Finally, set it aside for later.