Directions
<ol class="no-list-style"><li class="MethodStepper"><h4 class="step-title">Step 1</h4>Prepare your fish by ensuring it's extremely fresh and of sushi-grade quality. Rinse the sea bass fillets under cold water, pat thoroughly dry with paper towels, and cut into 2cm cubes. Place in a non-reactive glass bowl and refrigerate while preparing other ingredients. Using the freshest fish possible is crucial as it will be "cooked" only by acid rather than heat.</li><li class="MethodStepper"><h4 class="step-title">Step 2</h4>Make the leche de tigre (tiger's milk) marinade by combining the fresh lime juice, soy sauce, grated ginger, and ají amarillo paste in a bowl. Whisk thoroughly to ensure the ají paste is fully incorporated. The citric acid in the lime juice will denature the proteins in the fish, effectively "cooking" it without heat.</li><li class="MethodStepper"><h4 class="step-title">Step 3</h4>Place the sliced red onion in a small bowl with cold water for 5 minutes, then drain thoroughly. This quick soak removes some of the harsh raw onion flavor while maintaining its crispness.</li><li class="MethodStepper"><h4 class="step-title">Step 4</h4>Remove the fish from the refrigerator and season lightly with sea salt. Pour the leche de tigre marinade over the fish, ensuring all pieces are submerged. Allow to marinate for 10-15 minutes, stirring gently halfway through. Watch the fish carefully—it should become opaque but still remain tender. Over-marinating will make the fish tough and rubbery.</li><li class="MethodStepper"><h4 class="step-title">Step 5</h4>While the fish marinates, prepare the sweet potato if not already cooked. The traditional method involves baking or steaming until tender but still holding its shape. The sweetness of the potato provides a perfect contrast to the acidic ceviche.</li><li class="MethodStepper"><h4 class="step-title">Step 6</h4>Once the fish has reached the desired level of "doneness" (opaque exterior but still tender), gently fold in the drained red onions, sweet potato cubes, and corn kernels. The fish will continue to "cook" slightly in the marinade, so it's better to err on the side of less marinating time.</li><li class="MethodStepper"><h4 class="step-title">Step 7</h4>Just before serving, add the diced avocado and gently fold to incorporate. The creamy texture of avocado complements the firm texture of the fish and adds a rich mouthfeel to balance the acidity.</li><li class="MethodStepper"><h4 class="step-title">Step 8</h4>Divide the ceviche among four chilled serving bowls, making sure to include some of the flavorful leche de tigre marinade in each portion. Garnish generously with fresh chopped cilantro and sprinkle with toasted sesame seeds for that final Japanese touch. Serve immediately for the best texture and flavor experience.</li></ol>