
Step 1 · Prepare the Tuna
Add the tuna to a medium fine-mesh strainer and rinse under cold water, then press with a fork to remove any excess liquid. Transfer the tuna to a large bowl.
Step 2 · Mix Ingredients
Add the tomato, red onion, feta, olives, capers, parsley, dill, lemon juice, olive oil, and black pepper and mix until evenly incorporated.
Step 3 · Make the Aioli
In a small bowl, whisk together the mayonnaise, dill, garlic, lemon juice, and salt until smooth.
Step 4 · Assemble Tostadas
Spoon the tuna onto the tostadas and drizzle the aioli on top. Garnish with more parsley and dill, if desired.
Step 5 · Serve
Enjoy!