Preheat your oven to 400°F (200°C) °F and position the rack in the center. Cut four pieces of aluminum foil, each approximately 12x18 inches.
Place one salmon fillet in the center of each foil sheet. Divide the asparagus into four equal portions and arrange them alongside the salmon.
Season both the salmon and asparagus with salt and freshly ground black pepper.
In a small bowl, whisk together ⅓ cup fresh lemon juice, ⅓ cup unsalted butter or olive oil, 5 garlic cloves (chopped), and 1 teaspoon carom seeds or dill seeds. Drizzle the mixture evenly over each salmon and asparagus portion.
Fold the foil over the salmon and asparagus to make sealed packets, ensuring the edges are tightly crimped to prevent any sauce from leaking.
Transfer the foil packets to a baking sheet and bake for 13–15 minutes.
Carefully open each packet and broil for an additional 1–2 minutes to crisp the edges, if desired.
Garnish with fresh dill and serve with lemon wedges. Enjoy!