Most fruits can be juiced in a cold press juicer, but some may require additional preparation or are not recommended for juicing. Fruits with hard pits or tough skins, such as peaches, apricots, and cherries, should be pitted before juicing. Citrus fruits like lemons and oranges can also be juiced in a cold press juicer, but the peel and pith can make the juice bitter. Bananas and avocados cannot be juiced in a this juicer because they do not produce enough juice and can clog the machine. It is preferable to use a blender or food processor for these fruits.