Combine the cannabutter, water, milk, salt, and granulated sugar together in a medium saucepan over medium heat. Stir until the butter has melted. Bring mixture to a simmer. Once simmering, reduce heat to low and add the flour all at once. Stir until the flour is completely incorporated and a thick dough clumps into a ball. Mash the dough ball against the bottom and sides of the pan for 1 minute, which gently cooks the flour. Remove from heat and transfer to the bowl of a stand mixer fitted with a paddle attachment or, if using a handheld mixer, a large mixing bowl. Allow to cool down for a few minutes before adding the eggs in the next step.