In a mixing bowl, combine flour, cornstarch, salt, and black pepper. Gradually add cold water to create a batter.

Heat vegetable oil in a frying pan over medium-high heat.

Dip the cleaned baby octopus into the batter, ensuring they are well-coated.

Carefully place the battered octopus in the hot oil and fry until golden brown and crispy, about 3-4 minutes.

Remove the fried octopus and drain on paper towels.