Wash raw chicken with water and remove chicken giblets
Pat chicken dry with paper towel
Liberally salt the inside and outside of chicken
Use 2 tbsp of room temperature butter to coat the chicken. Also, add butter under chicken skin by separating chicken skin from meat while still keeping edges attached. Evenly spread butter on outside and under chicken skin
Zest orange and set zest aside. Cut orange in half.
Mix 2 tbsp sumac, 1 tsp cumin, 1/2 of orange zest and freshly grated ginger together in a small bowl. Rub mix evenly on the outside of the entire chicken.
Cut onion into quarters
Stuff chicken with quartered onion, orange halves, and lemon half
Tie chicken bottom together with twine to close open cavity. Tie chicken legs together
Cover chicken and place in the fridge and let rest for 4 hours. Cover other half of orange zest and save for later