1. FOR THE BEEF AND MARINADE: Combine coriander, white pepper, brown sugar,
and fish sauce in large bowl. Add beef, toss well to combine;
marinate 15 minutes.
2. FOR THE STIR-FRY: In small bowl, stir together fish sauce, vinegar, water,
brown sugar, and chili-garlic paste until sugar dissolves; set aside. In small
bowl, mix garlic with 1 teaspoon oil; set aside. Heat 2 teaspoons oil in 12-inch
nonstick skillet over high heat until smoking; add one-third of beef to skillet
in even layer. Cook, without stirring, until well browned, about 2 minutes, then
stir and continue cooking until beef is browned around edges and no longer pink
in the center, about 30 seconds. Transfer beef to medium bowl. Repeat with
additional oil and remaining meat in 2 more batches.
3. After transferring last batch of beef to bowl, reduce heat to medium; add
remaining 2 teaspoons oil to now-empty skillet and swirl to coat. Add chiles and
shallots and cook, stirring frequently, until beginning to soften, 3 to 4
minutes. Push chile-shallot mixture to sides of skillet to clear center; add
garlic to clearing and cook, mashing mixture with spoon, until fragrant, about
15 seconds. Stir to combine garlic with chile-shallot mixture. Add fish sauce
mixture to skillet; increase heat to high and cook until slightly reduced and
thickened, about 30 seconds. Return beef and any accumulated juices to skillet,
toss well to combine and coat with sauce, stir in half of mint and cilantro;
serve immediately, sprinkling individual servings with portion of peanuts and
remaining herbs, and passing lime wedges separately.