UNPACK & STORE: Your BBQ package arrives fully cooked, vacuum-sealed and flash-frozen to hold in all its flavor and moisture. Be careful with any leftover dry ice. No Dry Ice? No Problem. If it's still cool to touch, you can put the product in your freezer for up to six months. THAW & HEAT: Thaw products in refrigerator for 24 to 72 hours depending on the density of the item. Some products may be boiled in their bag. For all other items remove the sealed plastic before heating. The Heating Guide. To enjoy Jack Stack BBQ products at their best, proper heating is essential. We strongly encourage you to use your grill for heating meats when it's recommended. We do not recommend heating any of our products in the microwave.