In a small pot, add milk, egg yolks, whole eggs, and sugar. On a low heat, warm up the ingredients until lukewarm, about 110° Fahrenheit (45° Celsius). Make sure you don't overheat the ingredients past 120° Fahrenheit (49° Celsius).

Add the yeast and using a whisk stir all the ingredients together. Let the mixture stand for about 5 minutes to let the yeast start working.

In a small pot, melt the butter over a low heat, just until it melts. Avoid burning the butter. Then set it aside to cool off.

In the meantime, in a stand-mixer bowl, add the flour, lemon zest, salt, and vanilla, and mix all of them together using a dough hook.

Once the dough is uniform, elastic and peals easily off the walls of the bowl, reduce the speed of the stand mixer, slowly add the melted butter, and continue mixing on a low speed until the butter starts being absorbed by the dough. Increase the speed to medium, and continue mixing for about 3-5 minutes.

Set the dough aside to rest on the kitchen counter for about 45 to 60 minutes covered with a clean dish towel until it doubles in size.

While the dough is resting, prepare the filling (See instructions below)

Once the dough has rested, divide it into two or three portions, depending on how large you want your babkas to be (you can make up to three).

Preheat the oven to 325° Fahrenheit or 160° Celsius and line two to three loaf pans with parchment paper.

On a well floured large surface area, using a rolling pin, roll out the dough flat, about 18" x 10" or 46 cm x 25 cm, and about 0.4" or 1 cm thick.

Using a spoon, spread the pistachio and coconut spread, leaving a 1.0" or, 2.5 cm border all around.

Fold the left and right hand-side edges and then roll it into a long log.

Cut the log in the middle and then twist the two strands. Fold it in half, and gently place it inside the perchment lined loaf pan. Repeat the steps for the second, or third babka.

Let the formed babkas rest covered with clean dish cloth for about 45-60 minutes.

Bake for about 28 - 35 minutes maximum at 325° Fahrenheit or 160° Celsius.

Cool for about 15 minutes and enjoy!