Value Per Nutrient Food 0.03 g 100 grams Tryptophan Pork, fresh, variety meats and by-products, ears, frozen, cooked, simmered 0.03 g 100 grams Tryptophan Rice, white, long-grain, regular, cooked, unenriched, with salt 0.03 g 100 grams Tryptophan Corn, sweet, yellow, frozen, kernels, cut off cob, boiled, drained, with salt 0.03 g 100 grams Tryptophan Pie, cherry, prepared from recipe 0.03 g 100 grams Tryptophan Fast foods, potatoes, hashed brown 0.03 g 100 grams Tryptophan Cereals ready-to-eat, Ralston Corn Biscuits 0.03 g 100 grams Tryptophan Coffee, instant, regular, powder 0.03 g 100 grams Tryptophan Rice, white, long-grain, precooked or instant, enriched, prepared