Salmon with Salsa

Bahan-bahan (4 porsi)

• 20 ounces skinless salmon filets (each fillet should weigh about 5 ounces or 140 g)
• 1 pinch salt (to season)
• 1 pinch pepper (to season)
• 3 tablespoons lemon juice (divided)
• 1 tablespoon olive oil
• 2 tablespoons unsalted butter
• 5 cloves garlic (finely chopped or minced)
• 3 tomatoes (finely chopped)
• 2 tablespoons red onion (finely chopped )
• 1 tablespoon fresh cilantro leaves (finely chopped)
• 1/2 Serrano chile (or jalapeño, stems, ribs, seeds removed and finely chopped - adjust to your heat preference)
• 1 clove garlic (small, crushed)
• 1 tablespoons lime juice
• 1/4 teaspoon salt
• 1 large avocado (sliced)