Nue Nam Tok: Grilled Beef with Thai Seasoning

Serves 6. Remove the stems, but not the seeds, from the chilies. Slice the chiles crosswise into pieces 1/8" thick. Place the sliced chiles and vinegar in a small serving bowl. Let it stand for at least 15 minutes. Grill the beef to the desired doneness, preferably over charcoal. Slice it across the grain into strips 1/8" thick and 1 to 2 inches long. Put these in a large ceramic bowl. Peel the red onion, remove the root portion, and slice the onion vertically into thin strips. Slice the green onion diagonally into thin pieces. Add both types of onion to the beef. Add the lime juice, fish sauce, ground chilies, and ground rice. Mix well. Arrange a single layer of lettuce leaves on a serving platter, and place th beef mixture on top. Garnish with sprigs of coriander and mint or basil leaves. Serve at room temperature, with the vinegar sauce and rice. To roast and grind chiles: Use small hot chilies about 3 to 4 inches long. Roast whole chillie stems and all, in a dry wok or skillet until the color changes to dark red or brown depending on the chilies used. Be careful not to let them burn. When the chilies have cooled, remove the stems and seeds. Place the chilies in a food processor or blender and grind using short pulses. To toast rice: Place uncooked rice in a dry wok or skillet and heat over moderate heat until deep golden brown,s tirring frequently to keep from burning and to allow it to develop a uniform color. Watch the rice carefully after it begins to change colorand stir constantly because it can burn easily at this stage. When it is auniform deep golden color, remove from heat and allow to cool to room temperature. Grind it to a fine powder in a blender or a spice grinder.