Note from Cheri:
This marinade,
popular in Indian cuisine, is sensational for grilled chicken,
but I've also used it to great success with grilled vegetables.
Since the yogurt in this recipe provides a milder acidic action
than say vinegars do, you can let foods sit in the tandoori
marinade for hours (or even a couple of days) before cooking
(just be sure to keep everything refrigerated).