Step 1

Make the Mediterranean 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

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

Spoon the tuna onto the tostadas and drizzle the aioli on top. Garnish with more parsley and dill, if desired.

Step 5

Enjoy!