Grilled Albacore Tuna Kabobs Recipe: A Summer Cookout Favorite
November 18, 2024Grilled Albacore Tuna Kabobs Recipe: A Summer Cookout Favorite
Albacore tuna is one of the best fish for kabobs: its firm, dense flesh holds its shape on skewers where flakier fish fall apart, and it takes high direct heat well without drying out if pulled at the right temperature. The key is not overcooking it. Fully opaque albacore is dry and chalky; medium — seared exterior, warm pink center — is the correct target. This recipe serves 4; total time 50 minutes including 30-minute marinade.
Albacore tuna and mercury: what to know
Albacore is larger and longer-lived than skipjack (light) tuna and accumulates more mercury as a result. The FDA classifies albacore as a “Good Choice” — one serving per week — rather than “Best Choice.” This is relevant for pregnant women, nursing mothers, and young children, who should follow the one-serving-per-week guideline. For most adults eating this recipe occasionally as a summer dish, this is not a practical concern. For frequent tuna consumption, skipjack-based canned light tuna is the lower-mercury option.
Ingredients
Fish and vegetables: 1 lb albacore tuna steaks, cut into 1½-inch cubes (larger than 1 inch — smaller cubes overcook before the exterior chars properly) — 2 bell peppers (different colors), cut into 1½-inch pieces — 1 red onion, cut into 1½-inch wedges — 1 medium zucchini, cut into 3/4-inch rounds — 1 cup cherry tomatoes (separate skewer recommended — see assembly note).
Marinade: 1/4 cup good olive oil — 3 tbsp soy sauce — 1 tbsp fresh lemon juice — 1 tbsp honey or maple syrup — 2 garlic cloves, minced or grated — 1 tsp smoked paprika — 1/2 tsp black pepper — no added salt (the soy sauce provides sufficient sodium).
Method
Step 1 — Marinade. Whisk all marinade ingredients together. Place tuna cubes in a shallow dish or zip-lock bag; pour marinade over. Refrigerate 30–60 minutes. Do not exceed 2 hours: soy sauce and lemon juice are both acidic and will begin denaturing the protein on the surface of the fish beyond 2 hours, producing a mushy, mealy exterior texture. The marinade’s job is flavor penetration, not tenderizing; 30–45 minutes is sufficient.
Step 2 — Skewer assembly. The core problem with mixed fish-and-vegetable kabobs is that different ingredients cook at different rates. Bell pepper, onion, and zucchini need 4–6 minutes per side over high heat; tuna cubes need 2–3 minutes per side; cherry tomatoes need 1–2 minutes before they burst. If everything is on the same skewer, either the tuna overcooks while waiting for the vegetables, or the vegetables undercook while the tuna rests at medium. Recommended approach: separate tuna skewers and vegetable skewers. This lets you pull the tuna at the correct doneness while the vegetables continue cooking. Thread tuna cubes with small gaps between pieces — touching cubes steam rather than sear at the contact point. For the vegetable skewers, alternate bell pepper, onion, and zucchini; add cherry tomatoes to their own short skewers and grill last for 2 minutes only.
Step 3 — Prepare the grill. Heat to high (450–500°F at grate level). Clean grates and oil them with a folded paper towel dipped in neutral oil, applied with tongs. A hot, clean, oiled grate is what prevents tuna from sticking. If the grate is not hot enough when the tuna goes on, it will stick and tear when you try to turn it. If using wooden skewers, soak in water 30 minutes before use.
Step 4 — Grill. Place tuna skewers on the grill; do not move for 2 minutes. The tuna will release from the grate naturally when the sear is complete — if it resists, wait another 30 seconds. Turn; grill 1–2 minutes on the second side. Target doneness: seared on the outside, warm pink in the center (medium). The fish is done when it no longer looks raw at the edges but still has color in the center when you press a cube gently with a finger — firm at the edge, yielding in the middle. Fully opaque = overcooked. Start the vegetable skewers 2–3 minutes before the tuna; pull tuna when done and let it rest 2 minutes while the vegetables finish.
Step 5 — Serve. Transfer to a platter. Squeeze fresh lemon over the tuna immediately — the acid finish brightens the soy-honey glaze. Garnish with flat-leaf parsley. Serve with garlic butter rice, quinoa, or grilled bread. Dipping sauce options: garlic aioli (see fritters recipe), spicy mayo (2 tbsp mayo + 1 tsp sriracha + 1/2 tsp sesame oil), or tzatziki.
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