Salsa Macha Tuna Tostadas with Guacamole

Salsa Macha Tuna Tostadas with Guacamole

These Salsa Macha Tuna Tostadas with Guacamole are a bold, zesty, and refreshing twist on a classic tostada. Sushi-grade tuna is marinated in a spicy-savory blend of soy, lime, sesame, and salsa macha, then layered over creamy guacamole on a crispy tostada shell. Finished with bright lime zest and green onions, each bite is packed with flavor and texture. Perfect as a light lunch, appetizer, or show-stopping snack.
Total Time 25 minutes
Course Appetizer, Main Course
Cuisine Fusion, Japanese, Mexican
Servings 4 Tostadas

Ingredients
  

For the marinated tuna —

  • 8 oz sushi-grade ahi tuna finely diced
  • 2 tbsp low-sodium soy sauce
  • 1 tbsp lime juice
  • 1 tsp rice vinegar
  • 1 tsp sesame oil
  • 1 tbsp salsa macha adjust to spice level
  • ½ tsp grated fresh ginger
  • ½ tsp sugar
  • Pinch of salt

For the guac —

  • 2 ripe avocados
  • 1 tbsp lime juice
  • Salt to taste

To assemble —

  • 8 mini-sized tostadas or 4 regular-sized tostadas
  • Guacamole
  • Marinated tuna
  • Lime zest
  • Thinly sliced green onions
  • Optional: drizzle of extra salsa macha and sesame seeds

Instructions
 

  • In a bowl, combine the diced tuna with soy sauce, lime juice, rice vinegar, sesame oil, salsa macha, ginger, sugar and salt.
  • Mix well and let it marinate in the fridge for 10 – 15 minutes.
  • In another bowl, mash the avocados with lime juice and salt. Mix until smooth but still slightly chunky.
  • Spread a thick layer of guacamole onto each tostada.
  • Spoon the marinated tuna evenly on top of the guac.
  • Finish with lime zest and garnish with sliced green onions.
  • Add an optional drizzle of salsa macha or sprinkle of sesame seeds.
  • Serve immediately and enjoy!

Notes

  • Place tuna in the freezer for 30 minutes before cutting to make it easier to dice.
  • Use sushi-grade fish only—ahi, yellowfin, or chutoro work best.
  • To make-ahead, marinate the tuna overnight without lime juice; stir in the lime just before serving.
  • For crunchier tostadas, toast store-bought ones for a few minutes in the oven.
  • Pair with a crisp lager or a chilled citrusy mocktail for the perfect bite.
Keyword Ahi Tuna Tostadas
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