start by adding the sugar, butter and shortening to the bowl of a stand mixer fitted with a paddle attachment.
Beat together on high speed for 2 minutes or until fluffy and lighter in color.
Next, add in the eggs and beat together for 30 seconds.
Add in the pineapple juice, vanilla and pineapple flavor.
Mix together until combined.
Add in the flour, baking powder, baking soda and salt and mix just until combined.
Fold in the crushed pineapple with the juice and the chopped pineapple.