How to Quick Combi Grill Using Alto-Shaam Grill Grates Check out How to Quick Combi Grill Using Alto Shaam Grill Grates by Alto- Shaam on Snapguide. Bypassing a preheated grill grate makes it safer for cooks, easier to load product/probe placement, no need for the grill to be kept in the oven and can achieve these resultswith full loads.