Marinate the chicken with all the wet marinade ingredients for 1–2 hours.
Mix all the dry coating ingredients. Remove the chicken, reserving the marinade. Coat each strip in the flour mixture, dip back into the marinade, then coat again in flour, pressing firmly to create a craggy coating. Rest on a wire rack for 2–3 minutes.
Deep-fry at 170–175°C / 340–350°F for 5–7 minutes, until golden and cooked through. Drain on a wire rack.
For the sauce, add everything except the butter to a pan and let it bubble for 2–3 minutes. Turn off the heat, add the cold butter and stir until glossy.
Toss the crispy chicken in the sauce and serve with cool ranch.