Fresh chestnuts are in season from September through February. Store unshelled nuts in a cool, dry place; store shelled nuts in a covered container in the refrigerator.
Preheat oven to 400°.
Trim fat from pork. Cut each tenderloin lengthwise down center, cutting to, but not through, bottom. Place each tenderloin between 2 sheets of heavy-duty plastic wrap, and flatten to 1/4-inch-thick rectangle, using a meat mallet or rolling pin.
Combine breadcrumbs and next 3 ingredients; stir well. Spoon one-half of mixture over 1 tenderloin; spread to within 1/2 inch of sides. Roll up tenderloin, jelly roll fashion, starting at narrow end. Tie with heavy string at 2-inch intervals. Repeat procedure with remaining tenderloin and breadcrumb mixture.
Combine orange juice concentrate and next 4 ingredients; rub over surface of tenderloins.
Place tenderloins on a broiler pan coated with cooking spray. Bake, uncovered, at 400° for 45 minutes. Let stand 10 minutes; slice.
carbo rating: 10
The Complete Step-by-Step Low Carb Cookbook