A:AnswerI have used mine to chop pecans abs it worked perfectly. I would use the pulse setting to make sure you don’t over chop. I had a brilliant idea to use it to chop up cinnamon sticks because my cookie recipe used a lot of fresh cinnamon. BAD idea, it worked perfectly for fine chopping cinnamon sticks but the cinnamon was so hard it ruined the interior finish of the tumbler. It didn’t break or crack the tumbler but it was scratched badly. I can still use it but it doesn’t look so pretty anymore. But, it proved that the tumbler will stand up against rough chopping. I love my Ninja.