In this video, we learn how to test hickory shavings when smoking meat. If the chips are completely black, then you cannot use these any longer and they have been smoked too much. You can use sawdust from hickory shavings, just make sure it is hickory. If you cannot tell, then you can use hickory chips that are larger than sawdust and smell like hickory. After you buy these, you can use them inside of your smoker to have the best taste when you smoke your meat inside of the smoker. Once the chips turn black, remove them from the smoker and replace with new!