How to Make It
Fill a large pot with 3 quarts of water. Add the carrot, onion, peppercorns and bay leaf and bring to a simmer. Add the chicken and simmer over moderate heat until cooked through, about 30 minutes. Transfer the chicken to a plate and refrigerate until cool enough to handle. Reserve the broth for another use.
Discard all of the chicken skin. Remove the meat from the bones and cut it into 1/2-inch pieces.
In a medium bowl, mix the 1 cup of mayonnaise with the curry powder and lime juice. Stir in the chicken pieces, grapes, celery, cilantro and pistachios and season with salt and pepper. Serve the chicken salad with the Garam Masala Biscuits on the side. Alternatively, split the biscuits in half and spread them lightly with mayonnaise. Mound the chicken salad on the bottom halves and close the sandwiches. Serve right away.
To toast the pistachios, spread them in a pie plate and bake at 350° for 5 minutes.
For a deeper curry flavor, add a tablespoon or two of curry powder or garam masala to the chicken poaching liquid in Step 1. For a shortcut, skip step 1 altogether and start with a plain rotisserie chicken from the market.