Ingredients:

• 1 1/2 pounds fresh ahi or albacore tuna, cut into 1/2-inch cubes
• 1/2 cup Salsa Macha, plus more to taste
• 1 teaspoon fine sea salt, plus more to taste
• 1 cup diced English cucumber
• 1 cup diced red onion
• 1 medium-size firm avocado, cut into 1/2-inch cubes
• 2 tablespoons fresh Key lime juice (from about 4 Key limes), plus more to taste
• 1/2 cup fresh cilantro leaves
• Tostadas, for serving

Cooking Instructions:

1. Place fish in a glass or ceramic bowl. Give the salsa macha a good stir to evenly distribute all ingredients. Pour salsa macha over fish, and stir gently with a spoon until the fish is completely coated. Season with salt. Let stand 5 minutes.
2. Gently stir in the cucumber, onion, and avocado. Add lime juice. Taste and add more salsa macha or lime juice, if desired. Stir in cilantro just before serving. Season with additional salt, and serve immediately with tostadas.