What is the name of Porto's signature cake that includes chocolate and custard?

Porto's signature cake that features chocolate and custard is known as the Chocolate Mousse Cake. This cake is well-loved for its rich layers of chocolate mousse, which includes a creamy custard element that adds depth and indulgence to each bite. The combination of light, airy mousse with the dense chocolate base creates a delightful texture contrast and a harmonious flavor that showcases both the chocolate and custard elements.

The other cakes listed, while popular, do not contain this distinctive combination. The Chocolate Fudge Cake typically emphasizes a denser fudge flavor without the custard aspect. The Vanilla Bean Cake primarily highlights vanilla flavors and doesn’t incorporate chocolate or custard. Lastly, the Red Velvet Cake is characterized by its unique red color and cream cheese frosting, again lacking the specific combination of chocolate and custard found in Porto's Chocolate Mousse Cake.