Wash and dry produce.

Trim and thinly slice scallions, separating whites from greens. Halve tomatoes. Mince cilantro. Zest and quarter lime. Mince chili.

Melt 1 TBSP butter in a small pot over medium-high heat. Add half the scallion whites and ¼ tsp turmeric (½ tsp for 4 servings); cook until fragrant, 1 minute. (You’ll use more turmeric later.)

Stir in rice, stock concentrate, ¾ cup water (1½ cups for 4), and a big 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.

While rice cooks, in a medium bowl, combine tomatoes, cilantro, juice from half the lime, and remaining scallion whites. Season with salt and pepper. If you like spicy salsa, stir in chili to taste.

In a small bowl, combine sour cream, a big squeeze of lime juice, and as much lime zest as you like. Stir in water 1 tsp at a time until mixture reaches a drizzling consistency. Season with salt and pepper.

In a second small bowl, combine cumin and ¼ tsp turmeric (½ tsp for 4 servings). (Be sure to measure the turmeric.)

Pat barramundi* dry with paper towels; season all over with salt and pepper. Season flesh sides with spice mixture.

Heat a large drizzle of oil in a large, preferably nonstick, pan over medium-high heat. Add barramundi, skin sides down, and cook until skin is crispy, 4-5 minutes. Flip and cook until fish is opaque and cooked through, 2-3 minutes more.

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

Divide rice between plates; top with barramundi. Garnish with salsa fresca and crema and serve.