Beef Tataki recipes

Name: Beef Tataki recipes
Ingredients: 1 very cold beef tenderloin, about 2 lb. (1 kg), silverskin removed; 1 Tbs. canola oil; 1 Tbs. sweet soy sauce (optional); freshly ground pepper; 1⁄3 cup (3 fl. oz./80 ml) reduced-sodium soy sauce; 1⁄4 cup (2 fl. oz./60 ml) mirin or medium-dry sherry; 1 Tbs. peeled and grated fresh ginger; 3 green onions, white and light green parts, thinly sliced, plus slivered green onions for garnish; 2 large garlic cloves, thinly sliced; Zest of 1 lemon, removed in strips with a vegetable peeler; 1⁄4 cup (2 fl. oz./60 ml) reduced-sodium soy sauce; 2 Tbs. rice vinegar; 1 1⁄2 Tbs. turbinado or firmly packed dark brown sugar; 2 Tbs. fresh lemon juice; 2 Tbs. finely snipped fresh chives