Spicy Salmon Teriyaki with Steamed Bok Choy

Name: Spicy Salmon Teriyaki with Steamed Bok Choy
Ingredients: 5 Tbsp. unseasoned rice vinegar; 3 Tbsp. low-sodium soy sauce or tamari; 2 Tbsp. hot chili paste (such as sambal oelek); 2 Tbsp. honey; 1 lb. skinless salmon fillet, cut into 3x1 1/2 strips; 1 1/2 tsp. kosher salt, divided, plus more; 3 Tbsp. cornstarch; 2 Tbsp. vegetable oil; 4 small heads baby bok choy (about 1 lb.), trimmed, quartered; Steamed rice (for serving; optional); 3 scallions, very thinly sliced on a diagonal; 1 tsp. toasted sesame seeds