Savor Delicious Ruth's Chris Ahi Tuna Appetizer (Steakhouse Style) - My Home Made Recipe

Ingredients

• 12 oz (340 g) sashimi-grade ahi tuna steak, about 1 to 1 1/4 inches thick
• 2 tablespoons blackening seasoning
• 1 tablespoon avocado oil, plus more for brushing
• 1/4 teaspoon kosher salt, if your seasoning is salt-free
• 2 tablespoons dry mustard powder
• 1 tablespoon Dijon mustard
• 3 tablespoons soy sauce or tamari
• 2 tablespoons cold beer or cold water
• 1 teaspoon honey
• 1/2 teaspoon toasted sesame oil
• 1 small cucumber, thinly sliced
• 1 tablespoon rice vinegar
• 1/4 cup pickled ginger
• 2 tablespoons fresh cilantro leaves
• 1/2 lemon, cut into wedges