Choose fruit with a fragrant aroma and flesh that yields a bit when pressed gently. If a peach has cuts or tan spots, or if it's rock-hard or mushy, don't buy it. Color has more to do with variety than ripeness.
Everyday Food, July/August 2004 http://www.marthastewart.com/316040/grilled-peaches© 2013 Martha Stewart Living Omnimedia. All rights reserved.