In a hot wok or saute pan add oil. When hot toss beef quickly with garlic, ginger siracha. In approximately 1 minute beef will still be medium rare. Remove with slotted spoon and reserve. Add leeks to hot pan and deglaze with soy sauce and mirin, bring to a simmer. Add noodles and toss with beef mixture. In serving bowls place spinach, carrots and alfalfa sprouts around outside, then add beef and noodles to center. Garnish with toasted sesame seeds and curled beets. Recipe by: CHEF DU JOUR SHOW #DJ9406 - DEB STANTON