Seared Tuna with Avocado and Creamy Cauliflower

This is what I am going to make tonight:

1/4 cup chopped fresh cilantro leaves
1 jalapeno chiles, seeded, de-ribbed, minced
2 teaspoons grated fresh ginger
2 garlic cloves, minced
Juice from 2 limes
1/4 cup soy sauce (use wheat-free soy sauce if you need to avoid gluten or wheat)
1/4 teaspoon sugar
Salt and freshly ground black pepper
1/4 cup plus 2 tablespoons extra-virgin olive oil
2 (6 ounce) blocks sashimi-quality tuna
Salt and pepper
1 ripe avocados, halved, pitted, peeled and sliced

In a mixing bowl, combine the cilantro, jalapeno, ginger, garlic, lime juice, soy sauce, sugar, salt, pepper, and 1/4 cup of olive oil.

Place a large skillet over medium-high heat and coat with the remaining 2 tablespoons of olive oil. Sprinkle the tuna pieces with salt and pepper. Sear the tuna for a minute on each side. Pour half of the cilantro mixture into the pan to coat the fish.

Transfer the seared tuna to plates and serve with the sliced avocado and the remaining cilantro sauce drizzled over the whole plate.

Side dish: Creamy Cauliflower
8 cups bite-size cauliflower florets (about 1 head)
4 cloves garlic, crushed and peeled
1/3 cup nonfat buttermilk (see Tip)
4 teaspoons extra-virgin olive oil, divided
1 teaspoon butter
1/2 teaspoon salt
Freshly ground pepper to taste
Snipped fresh chives for garnish

Place cauliflower florets and garlic in a steamer basket over boiling water, cover and steam until very tender, 12 to 15 minutes. (Alternatively, place florets and garlic in a microwave-safe bowl with 1/4 cup water, cover and microwave on High for 3 to 5 minutes.)

Place the cooked cauliflower and garlic in a food processor. Add buttermilk, 2 teaspoons oil, butter, salt and pepper; pulse several times, then process until smooth and creamy. Transfer to a serving bowl. Drizzle with the remaining 2 teaspoons oil and garnish with chives, if desired. Serve hot.