Grease and flour a 12-cup bundt pan to prevent the cake from sticking. Preheat your oven to 350°F (175°C) so it's ready for baking once the batter is prepared.
In a large mixing bowl, combine the white cake mix, water, vegetable oil, and eggs. Blend on low speed until the ingredients are moistened, then increase to medium speed and beat for 3 minutes. This ensures a smooth and fluffy batter.
Pour half of the batter into the prepared bundt pan. Next, transfer half of the remaining batter into a small bowl and stir in the strawberry flavoring and red liquid food color until the batter is a vibrant pink. Carefully pour this pink batter over the first layer in the pan. Stir 1/4 cup chocolate-flavored syrup into the remaining plain batter in the mixing bowl and pour this chocolate batter on top of the strawberry layer in the pan, spreading gently if necessary.
Bake the layered cake for about 40 minutes at 350°F (175°C), or until a toothpick inserted into the center comes out clean. Remove the cake from the oven and allow it to cool in the pan for 15 minutes before inverting onto a wire rack or serving plate. I like to let the cake cool a bit longer to ensure it comes out cleanly and keeps its beautiful shape.
To make the chocolate glaze, whisk together the powdered sugar and 3 tablespoons chocolate syrup until smooth and thick. If the glaze is too thick, add a few drops of water; if it's too thin, add more powdered sugar until the desired consistency is reached. This glossy glaze is perfect for drizzling over the cake, adding extra sweetness and chocolate flavor.
Once the cake has cooled and been removed from the pan, drizzle the prepared chocolate glaze generously over the top. Let the glaze set for a few minutes before slicing and serving. For an extra touch, I sometimes like to garnish with fresh strawberries or chocolate shavings on top.