Step 1To prepare the blue jello layer, place 6 to 8 butterfly pea tea flowers into a jar filled with 1 1/4 cups of cold water (I used 8 flowers for a deep blue jello). Let it steep at room temperature for at least 30 minutes or in the fridge for up to 8 hours. The longer you leave it the deeper the color. Once done, remove and discard the flowers.