Smoked Dak-Galbi (Spicy Chicken)

In a large glass bowl, whisk together gochujang (0.25 cup), gochugaru (2.0 tbsp), soy sauce (3.0 tbsp), brown sugar (2.0 tbsp), and rice syrup or honey (2.0 tbsp) until the sugar dissolves. Add the toasted sesame oil (2.0 tbsp), the entire head of grated garlic, grated ginger (2.0 tbsp), and the grated onion (1 whole) to create a thick, fragrant paste. Grating the onion and garlic is crucial because it releases juices that help tenderize the meat while providing a base for the sauce to cling to.

Submerge the boneless chicken thighs (3.5 lbs) into the marinade, ensuring every fold of the meat is thoroughly coated with the red paste. Cover the bowl tightly with plastic wrap or transfer everything to a large gallon-sized freezer bag to maximize surface contact. Refrigerate for at least 4 hours, though 12 hours is ideal; the long soak allows the gochugaru to hydrate and the flavors to penetrate the dense thigh meat.

Set your smoker to 275°F using a mild fruit wood like apple or cherry, which complements the sweetness of the marinade without overpowering it. Ensure your water pan is filled to help maintain a humid environment, which prevents the sugary marinade from burning before the chicken is cooked through. Wait for the smoke to turn thin and blue before placing the meat on the grates.

Arrange the marinated chicken thighs directly on the smoker grates, leaving space between each piece for airflow. Close the lid and smoke until the internal temperature of the thickest part of the thigh reaches 165°F, which typically takes about 60 to 75 minutes. Don't worry if the marinade looks dark at this stage; the sugars are caramelizing and absorbing the wood smoke.

Continue smoking the chicken until it hits an internal temperature of 175°F. While 165°F is technically safe, chicken thighs benefit from the higher temperature of 175°F to fully break down connective tissue, resulting in a much juicer and more tender bite. The marinade should now appear tacky and deeply mahogany in color.

Transfer the chicken to a high-heat grill or the direct-sear zone of your smoker for a quick finish of 1 to 2 minutes per side. Watch carefully as the rice syrup and sugar in the marinade can go from charred to burnt very quickly. You are looking for localized black 'bubble' spots and a crispy texture on the exterior to mimic the traditional cast-iron pan-fried finish.

Remove the chicken from the heat and let it rest for 5 to 10 minutes so the juices can redistribute. Slice the thighs into bite-sized strips, which is the traditional way Dak-Galbi is served in Chuncheon. Serve immediately with steamed rice, fresh perilla leaves for wrapping, and pickled radish to cut through the intense heat and richness.