Fresh is always best, but it's better to use a little frozen fruit than no fruit at all. ***A good juicer will crush the cells and extract nearly all the juice available. This type of juicer will not be able to handle frozen fruits and vegetables. And the juicers that do (Omega Good luck and congrats on your new juicer! Enjoy it! Did you know you can juice frozen fruit? Juicers are great for fruit and vegetables. Juice your produce fresh from the market. But juice frozen fruit too!