Continue to mix dough until it is smooth, about 1 minute.

Add the eggs, one at a time, mixing until light and fluffy.

Slowly add the remaining sugar, mixing until stiff but not dry.

Add eggs one at a time and continue to mix on medium speed until combined.

Add water, mixing with a fork until a ball forms.

Stir in the water, then the oil, mixing until thoroughly blended.

Meanwhile, in a large bowl, mix the flour and butter together with your hands until smooth.

Using your hands, lightly mix just until ingredients are evenly distributed.

And no chance of him mixing outside this unit until we're certain he can fit in.

Continue mixing at medium speed until the batter is very smooth, about 10 minutes.