On both sides of the fish, make 2-3 diagonal cuts.
In a spacious bowl, mix adjika with 3 tbsp. water, vegetable oil, minced garlic, cumin and salt.
Place the fish in the marinade, stir and marinate for 15 minutes. During this time, turn the fish over once.
Grill the mackerel for 7-8 minutes on each side. Serve on a bed of greens with a lemon cut into 8 pieces.