Preheat oven to 350 F degrees.
Butter, flour and line the 3 8″ cake pans with parchment. Set aside.
Sift together cake flour, baking powder and salt.
Combine the vanilla and milk together and set both aside.
With a mixer set to medium, cream together butter and sugar for 5 minutes.
Scrape down the sides of the bowl and add in the eggs one at a time waiting until they are each fully incorporated before adding a new one. This usually takes around 15 seconds per egg.
Scrape down the sides of the bowl. Add in raspberry puree/jam and mix until fully combined.
In three batches, add in dry ingredients on low speed, alternating with wet ingredients. Begin and end with dry ingredients.
Add in food coloring at this point if desired.
Fold the batter a few times with a spatula to make sure all ingredients are fully incorporated and then divide batter into the three baking pans.
Bake for 17-22 minutes, or until a toothpick comes out with a few crumbs. Trust your nose and keep a watchful eye after 17 minutes.