Peel and coarsely grate the apple as well as the ginger. Remove the seeds from the serrano chile and finely chop it.
In a small mixing bowl, stir together the yogurt, the apple, ginger, chile and salt.
Carefully pour hot contents of skillet into the yogurt and stir together. Let the mixture sit for 5 minutes, then taste and adjust seasoning. Serve at cool room temperature.
(May be prepared up to several hours in advance.)
Recipe from the New York TimesĀ - David Tanis, Fred R. Conrad/The New York Times
Featured in: A Stew Greater Than The Sum Of Its Parts.