Combine the milk and pudding mix in a small mixing bowl or large liquid measuring cup. Whisk well until the pudding mix is dissolved. Next, you’ll add the heavy cream, red raspberry extract, and lemon extract. Add in a few drops of blue food coloring, then stir to combine.
You’ll need to continue adding blue food coloring, a little at a time, until your desired color is reached. I ended up using about 15-20 drops. Pour the mixture into a Ninja Creami pint container, being careful not to exceed the max fill line.
Remove the container from the freezer and take off the lid. Place it in the outer bowl of the Ninja Creami, securing the outer bowl lid. Lock the outer bowl into place in the Ninja Creami machine, then press the Ice Cream button. Allow the cycle to complete.