From The Cook's Illustrated Guide to Grilling and Barbecue, by the staff of Cook's Illustrated Magazine, (America's Test Kitchen, 2005). This marinade is perfect for lamb kebabs. Makes enough for 2 1/4 lbs. meat and yields about 3/4 cup marinade.
Combine buttermilk, lemon juice, garlic, brown sugar, curry powder, red pepper flakes, coriander, chili powder, salt and pepper in a gallon size resealable plastic bag or large nonreactive bowl in which meat can marinate.
Add whatever meat you're using and marinate for 2 hours unrefrigerated, and up to 24 hours in the refrigerator.