Mix the juice of the lemons and the orange juice with the soy sauce and set aside.
Incorporate the liquid preparation into the already cut tuna, then add the sesame oil, red onion, and mix gently with a spoon to avoid breaking the tuna. Let it marinate for 2 minutes.
Place a bed of lettuce on the tostada and then add some cubes of marinated tuna.
Decorate each tostada with a cube of avocado, a cilantro leaf, and a pinch of sesame.
Nutritional Information
* * Information per 100g serving, percentage of daily values based on a 2,000 calorie diet.
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