In a large wok, skillet or cast-iron pan, heat the canola oil over medium-high until shimmering. Add the almonds, season with salt and cook, tossing, until toasted and crisp, 3 to 4 minutes. Add the celery and crunchy vegetables and toss until slightly softened, 1 to 2 minutes.
Step 2
Sprinkle with sesame seeds, if using, and toss until toasted, 1 to 2 minutes. Add the sturdy greens, toss until coated in oil, then add the vinegar, scraping the bottom of the wok to release any browned bits. Cover and cook until greens are lightly wilted, about 1 minute.
Step 3
Season with sesame oil and salt to taste. Divide the rice among four bowls and spoon the stir-fry over the top. Scatter the herbs and drizzle with soy sauce and Sriracha, if using.
