Tuna tartare and Avocado

I love, love, love, tuna tartare. Here is yet another version of it... and so easy to prepare!

Ingredients:
2 (9-oz.) tuna steaks
2 tbsp. mirin
2 tbsp. soy sauce
2 avocados, peeled, pitted, and cut into cubes
2 tbsp. lime juice
2 tbsp. olive oil
salt and freshly ground black pepper, to taste

Preparation:
1.) Chill tuna in freezer for 25 minutes.
2.) Transfer tuna to cutting board and, using a very sharp knife, cut tuna into cubes.
3.) Combine with mirin and soy sauce; refrigerate until ready to use.
4.) Meanwhile, combine avocado, lime juice, olive oil, salt, and pepper.
5.) Divide reserved tuna and avocado mixtures between plates. Serve immediately.