In a small pot, combine rice, ¾ cup water (1½ cups for 4 servings), and a pinch of salt. Bring to a boil, then cover and reduce to a low simmer. Cook until rice is tender, 15-18 minutes. Keep covered off heat until ready to serve

thinly slice scallions, separating whites from greens.

In a medium bowl, combine half the vinegar (you’ll use the rest later), ½ tsp sugar (1 tsp for 4 servings), and a pinch of salt.

Trim ends from cucumber. Using a peeler, shave cucumber lengthwise into ribbons, rotating as you go, until you get to the seedy core; discard core. Stir cucumber ribbons into bowl with vinegar mixture. Set aside.

Heat a drizzle of oil in a large, preferably nonstick, pan over medium-high heat. Add cabbage and carrot mix; cook, stirring, until just tender, 1 minute. Season with salt and pepper

Heat a drizzle of oil in same pan over medium-high heat. Add scallion whites; cook until fragrant, 1 minute.

Add pork and a pinch of salt and pepper. Cook, breaking up meat into pieces, until browned and cooked through, 4-6 minutes.

Stir in half the sesame seeds (save the rest for serving) and remaining vinegar. Cook for 30 seconds, then stir in umami ginger sauce.

Bring to a simmer, then immediately turn off heat. Season with salt and pepper.

While pork cooks, in a small bowl, combine sour cream with Sriracha to taste. Stir in water 1 tsp at a time until mixture reaches a drizzling consistency. Season with salt.

Fluff rice with a fork; stir in 1 TBSP butter (2 TBSP for 4 servings) and season with salt and pepper.

Divide rice between bowls; top with pork, cabbage and carrots, and pickled cucumber (draining first). Drizzle with Sriracha crema. Garnish with scallion greens and as many remaining sesame seeds as you like. Serve.