The next thing we're going to do is add some additional depth to our Icing. To do this we will add a Solidifier Modifier to our Icing.

With our Icing selected, we are going to click on Modifiers from our Properties menu and click the Add Modifier button. From there we choose Generate from the context menu, and click Solidify to add the Solidify Modifier to our Modifier properties.

We're going to change our thickness 0.025 m. This specifies the depth to our Icing's mesh.

We're also going to offset our model by a value of 1. This parameter determines the direction and positioning of the solidified thickness relative to the original mesh surface.