Add the egg and pulse until the dough begins to pull away from the sides of the bowl.
Slowly add water, stirring flour from the center outward, until a dough begins to form.
Turn the processor off when the dough begins to clump up.
Add the egg and pulse just until dough begins to come together.
When the dough begins to rise, the seeds move away from each other.
Add the ice water, a little at a time, while the machine is running, until the dough begins to mass around the blade.
Stir with a fork from the center outward until a dough begins to form.
Add the water and pulse until the dough barely begins to come together.
Add to the flour mixture and stir until dough begins to come together.
Process until the dough begins to pull away from the sides of the bowl and forms a ball.