1 In food processor, combine lemongrass, shallot, garlic, sugar, red pepper flakes, salt, ginger, vegetable oil, Thai fish sauce and soy sauce.2 Process well, about 2 minutes. Place chicken in zipper-top plastic bag and pour marinade over, making sure it is well-coated. 3 Refrigerate chicken for at least 8 hours or overnight.4 Preheat oven to 350 F.5 Remove chicken from bag, reserving marinade. Place chicken in roasting pan and place in oven. 6 Roast for about 1 hour 30 minutes, basting two or three times with reserved marinade, until chicken is golden brown. 7 Chicken is done when thermometer inserted into thickest part of the thigh registers 180 F. 8 Let chicken rest for 10 minutes before serving.