If using a customized protein, pat dry and season both sides with a pinch of pepper.
If using ahi tuna, follow same instructions as salmon in Step 5, cooking until tuna reaches minimum internal temperature, 4-5 minutes per side. Tuna is often enjoyed medium-rare (pink in the middle). For medium-rare, cook 1-2 minutes per side. Consuming raw or undercooked tuna may increase your risk for food-borne illness.
If using chicken breasts, follow same instructions as salmon in Step 5, cooking until chicken reaches minimum internal temperature, 5-7 minutes per side.