Oil-Poached Halibut and Avocado Salad - SippitySup

Ingredients

• ¼ cup kosher salt (plus more for seasoning)
• 2 cups water
• 4 cups ice cubes
• 1 pound halibut fillets
• extra-virgin olive oil (as needed for poaching)
• 1 tablespoon whole mustard seeds
• 1 tablespoon whole black peppercorns
• ½ cup mayonnaise
• 4 anchovy fillets (minced)
• 2 tablespoons capers (drained and chopped)
• 1 clove garlic (peeled and minced)
• 2 tablespoons freshly squeezed lemon juice (divided)
• 1 celery rib (thinly sliced crosswise)
• ¼ cup finely diced red onion
• ¼ cup pitted and chopped oil-cured black olives
• 2 avocados (halved and pitted
• 1 cup sprouts or micro greens (for garnish)