Start by melting 2 sticks of butter in a microwave-safe bowl in 30 second intervals until completely melted. Mix in 4 Tbsp jasmine tea leaves. Microwave another 30 seconds, then set aside and steep for 20 minutes.
In a large mixing bowl, combine cake mix, eggs, 1 cup milk, and 2 tsp vanilla extract. Next, add butter, using a fine mesh strainer to remove tea leaves and a rubber spatula to press as much of the butter out as possible. Whisk to combine until there are no clumps.
Grease a 9" springform pan with butter and a light sprinkling of powdered sugar or flour to create a barrier before pouring in the cake mix.
Bake cake according to box instructions. In my case, it was 30 minutes at 350° F. Once done, let sit on a cooling rack for 15 minutes before running knife along sides to remove it from the pan. If the cake has domed, you can level it off with a bread knife. Allow the cake to cool completely before proceeding.
Using a bread knife, carefully cut the cake into two evenly-sized rounds. Set the top half aside, then brush a small amount of jasmine simple syrup over the top of the lower round. We want to add just enough to give the cake some additional jasmine flavor, but not so much that it becomes soggy.
In a medium-sized bowl, mix together 10 oz crushed pineapple (undrained) and a package of Jell-o instant pudding mix. Gently fold in 1/2 cup Cool Whip, taking care not to over-mix.
Spread mixture over the bottom layer of cake, then top with fresh berries.
Using an electric mixer, combine softened cream cheese and 1 stick butter. Use a sifter to add in 3 cups confectioners sugar, then pour in 1/4 cup pineapple juice, 1 tsp vanilla extract, and 1/2 tsp jasmine syrup. Mix until smooth.
Place the second layer of cake back on top. Use an icing spatula to apply the cream cheese frosting to the sides and top of the cake.
Slice fresh pineapple into disks about 1/2" thick and remove the core and skin. I like to cut them into hexagons, but that's just a personal preference!
Arrange the sliced pineapple atop the cake, along with fresh berries. You can also garnish with fresh jasmine, dried jasmine buds, baby's breath, or other edible floral accents. Allow cake to set for at least 1 hour in the fridge before serving.