Ceviche de Camarón | TASTE

Ingredients

• 1 lb medium or large shell-on shrimp
• 4 limes, juiced (about 2/3 cup)
• ½ orange, juiced
• 3 tbsp ketchup
• ½ tsp Dijon mustard (optional)
• 1 ½ tsp kosher salt, plus more to taste
• ¼ lg red onion, halved and thinly sliced
• 1 md tomato, diced
• ½ c packed finely chopped cilantro leaves
• 1 ripe avocado, sliced (optional)