Cut the squid bodies along the sides so they lay flat.: The smell of fresh squid is lightly briny and clean when handled properly, and flattening the bodies helps them cook evenly on the hot surface. Visually you want broad, even pieces that will make consistent contact with the grill, which minimizes chewy spots. If pieces are uneven, some will overcook while others remain underdone, so take your time to open them gently. A common mistake is slicing too thinly, which can cause them to dry out quickly under high heat.
In a bowl combine the olive oil, juice of one of the lemons and the rest of the ingredients, except the parsley.: Right away you will notice the bright citrus aroma mingling with the peppery perfume of freshly ground black pepper and the warm notes from the old bay seasoning . Whisking creates an emulsion that helps the marinade cling, ensuring the garlic and herbs adhere to the surface. This step matters because a well distributed marinade flavors every bite. One common error is not tasting the marinade; a quick taste helps balance salt and acidity before adding the squid .
Add the squid, toss to coat and refrigerate for 2 hours, tossing every 30 minutes or so, to make sure the marinade gets evenly distributed.: As the squid rests, the citrus and oil gently infuse it, and the texture becomes more receptive to quick grilling. When you toss periodically, you ensure all surfaces receive equal exposure, which is crucial for balanced seasoning. You should smell citrus and savory garlic notes as the marinade works, and the squash of the pieces should feel slightly firmer but not mushy. Avoid marinating much longer than recommended, as excess acid can make the flesh overly soft.
Preheat the grill to high. Place a piece of foil on the grill and brush it with a light coating of vegetable oil to keep the squid from slipping through the grill grates and sticking to the foil.: A properly preheated grill will radiate heat that sears quickly, producing sizzling sounds and smoky scent as the oil hits the grate. The foil is a practical trick that prevents smaller pieces from falling through while still allowing direct heat contact. Brush the foil lightly, you want a sheen, not pools of oil which can cause flare ups. A mistake is grilling on a cold surface; it will lead to sticking and a pale, unappetizing finish.
Grill the squid, about 3 – 4 minutes per side, until it turns opaque. Remove from the grill, garnish with the fresh parsley and the remaining lemon, cut into wedges.: When placed on the hot surface, listen for an eager sizzle and watch the edges for the first signs of char. The flesh will change from translucent to opaque and firm up quickly; this is your cue to flip. You want short cook times to avoid rubbery texture, and the goal is a light golden sear with a few darker charred spots for flavor contrast. If you see extensive curling or a stiff, shriveled surface, the heat was likely too high or the cook time too long, so adjust accordingly on the next batch.
Remove from the grill, garnish with the fresh parsley and the remaining lemon, cut into wedges.: Immediately after removing from heat, the plate will give off a warm, citrusy steam; finishing with fresh parsley adds a bright visual and flavor lift. Squeezing the reserved lemon over the hot Grilled Calamari brings the flavors to life and balances the char with freshness. A common oversight is waiting too long to serve, which allows the seared exterior to cool and lose vibrancy, so plate and serve promptly.