In a small bowl, mix the water, milk, honey and yeast. Mix it well and let the yeast bloom, about 15-20 minutes.
Once the yeast blooms, mix in the butter and peanut oil.
In a large bowl, add the flour, cornstarch, salt and baking soda. Mix well with a whick.
Pour the flour mixture into the yeast liquid using a stand mixture.
Mix until the you form a dough ball.
Remove the dough from the bowl onto a floured surface and knead well until the shinny dough ball
Coat the ball with a thin coating of peanut oil (or similar). Coat a bowl and place the dough ball in the bowl. Cover the bowl with plastic wrap and let the dough proof until twice the size, about 1 ½ to 2 hours.