African Adobo-Rubbed Tuna Steaks - cooking recipe

Ingredients

For the avocado salsa
2 ripe avocados, pitted, peeled, and cut into 1/2-inch cubes
3 scallions, white and green parts, thinly sliced on the bias
2 jarred piquillo peppers, diced (or substitute 2 jarred roasted red peppers)
2 garlic cloves, minced
1/3 cup fresh orange juice
1/4 cup fresh lime juice
1/2 cup extra virgin olive oil
kosher salt & freshly ground black pepper
For the adobo
1 1/2 teaspoons coriander seeds, toasted and ground
1 teaspoon ground ginger
1 1/2 teaspoons red pepper flakes, crushed
1 1/2 teaspoons ground turmeric
1 1/2 tablespoons dry mustard
1 1/2 teaspoons grated nutmeg
1 1/2 teaspoons ground allspice
1 1/2 teaspoons cayenne pepper
1 1/2 teaspoons fresh ground black pepper
1 1/2 tablespoons kosher salt
1 tablespoon paprika
1 1/2 tablespoons dried orange peel
1 tablespoon sugar
four 6-ounce tuna steak
1/4 cup peanut oil or 1/4 cup canola oil
For the cucumbers
2 1/2 tablespoons sugar
1/2 cup champagne vinegar
1 seedless European cucumber, peeled, halved lengthwise, seeded, and very thinly sliced

Preparation

For the salsa:
In a medium bowl, combine the diced avocados, scallions, peppers, and garlic. In another bowl, whisk together the orange and lime juices, olive oil, and salt and pepper. Pour over the avocado mixture and gently toss. Refrigerate for 15 minutes.
Meanwhile, for the cucumbers: Mix the sugar and vinegar in a bowl, stirring well. Add the cucumbers and allow to marinate for about 15 minutes.
To serve, arrange the cucumber in neat slices across each plate. Slice the tuna and lay it over the cucumbers. Spoon the avocado salsa on top of or around the tuna. Spoon a little of the pickling juices around the cucumbers, and serve. (Sometimes I add a little grated orange zest for garnish as well.)
For the adobo:
Mix all of the ingredients together in a bowl.
Rub each of the tuna steaks with 1 1/2 teaspoons of the oil and sprinkle generously with the adobo. (Reserve any extra adobo spice rub for another use.) In a nonstick skillet, heat the remaining 2 tablespoons oil until it begins to smoke. Sear the tuna on each side for only 1 minute - the tuna is served rare. Transfer to a plate and set aside.