Combine all the wet batter ingredients in a bowl and mix well. Add the chicken strips, making sure every piece is fully submerged. Cover and refrigerate for at least 2 hours or overnight.
Whisk together the flour, cornstarch, garlic powder, smoked paprika, black pepper, and salt in a shallow bowl.
Lift each strip out of the buttermilk and let the excess drip off. Press firmly into the dry batter until fully coated on all sides.
Heat oil to 350°F / 175°C and fry the chicken in batches for 8-10 minutes, flipping halfway through, until deeply golden and cooked through. Drain on a wire rack.
Whisk together all the sauce ingredients until smooth and well combined.
Plate the chicken fingers hot and serve with the Cane's sauce on the side.
