Smuđ u češnjaku is a traditional fish dish originating from the region of Slavonija. The dish is usually made with a combination of perch, garlic, oil, white wine, and salt. The fresh fish is cut in half lengthwise, and its interior is rubbed with minced garlic, while the skin is rubbed with salt.

The halves are arranged in an ovenproof dish, sprinkled with the remaining garlic, drizzled with hot oil, and the dish is then baked for about fifteen minutes in a hot oven. The fish is then covered with white wine and the dish is placed back in the oven in order for the sauce to thicken.

Once fully cooked, the dish is typically garnished with parsley and lemon wedges, and it's then ready to be enjoyed.