We have used the salt block 3 times on our gas grill. On the 3rd use, the block broke into 2 uneven pieces. We can still use the large piece but that limits the size of the item we are preparing for a meal. We noticed that it took a long time to preheat the block. We did buy a CDN laser thermometer to check the temperature of the block and the food.
I was preheating mine very slowly. At 418 degrees (using an infared thermomator) the corner blew off. Very disapointed!
Great products!! am giving them for Christmas presents. love the products from the meadow! great store in Portland, OR. Orders on line always sent well packaged and right away. I have always been satisfied with my purchases.