This product is home produced. 
Below are the list of ingredients: 

Vanilla Cake: 

unsalted butter 

vegetable oil

granulated sugar 

egg

vanilla extract

all-purpose flour

baking powder

salt

milk

Chocolate Cake: 

all-purpose flour

 sugar

unsweetened cocoa powder

baking powder

baking soda

salt 

espresso powder 

milk

vegetable oil

egg

vanilla extract

Strawberry Cake:

unsalted butter 

vegetable oil

granulated sugar 

egg

Strawberry purée 

all-purpose flour

baking powder

salt

milk

Marble Cake:

unsalted butter 

vegetable oil

granulated sugar 

egg

vanilla extract

coco powder 

all-purpose flour

baking powder

salt

milk