Grilled Tuna with Fresh Horseradish

2 (8 ounce) fresh tuna steaks

1 teaspoon vegetable oil

2 tablespoons soy sauce

2 tablespoons seasoned rice vinegar

1 tablespoon finely grated raw horseradish root, or more to taste

4 cherry tomatoes, sliced

½ teaspoon hot chile paste (such as sambal oelek)

1 tablespoon minced green onion

Preheat an outdoor grill for high heat, and lightly oil the grate. Lightly oil steaks with vegetable oil.

Stir soy sauce, rice vinegar, horseradish, cherry tomatoes, and hot chile paste in a bowl until well combined. Let sit for 20 minutes.

Place steaks over hottest part of the grill and cook for 3 minutes per side. Transfer to a plate. Spoon soy sauce mixture over steaks and garnish with green onion.