Combine water, butter and contents of rice and seasoning packets in medium saucepan. Bring to a vigorous boll. Cover tightly and simmer until all water is absorbed, about 5 minutes.
Meanwhile, combine vinegar, garlic, mustards and sugar, Whisk in oil. Stir into warm rice along with chicken, capers and red pepper. Heat through. Serve warm.
Makes 6 servings.
Cajun Country -- New Iberia, Louisiana