In a large bowl, add the Leche de Tigre: fresh lime juice, lemon juice, pineapple juice, garlic, 1 tbsp of the fresh dill, red onion, clam juice, sea salt, and freshly cracked black peppercorns. Whisk to combine. Add the salmon and use a large spoon to ensure the pieces are fully coated in the Leche de Tigre mixture. Cover the bowl with plastic wrap and refrigerate for 30 minutes.
Cut the kernels off the corn cob. Place a sauté pan over medium-high heat and add 1 tbsp of EVOO and 1 tbsp of butter. When the mixture is hot, add the corn and sauté until lightly charred and tender. Then add a pinch of sea salt, freshly cracked black peppercorns, and toss. Spoon the mixture into a bowl and refrigerate it to cool.
After 30 minutes, remove the bowl from the fridge and uncover it; the salmon should be slightly firm to the touch.
Fold in the apples, pineapple, grilled corn, fennel, jalapeño peppers, the remaining onion, and fresh dill.
Toss the mixture gently to combine. Top with fresh cilantro.
Serve with crispy corn tortillas as a dip, or spoon into soft or hard taco shells.