The Ninja can easily do cookie dough and cake batters. But it is a high speed unit. Anything that needs blending on low would not do well with this. I still have my mixer and use it for low speeds. My Ninja did come with a "dough blade" and I do use that for pie crust, bread dough, etc. I have not done egg whites, but… see more The Ninja can easily do cookie dough and cake batters. But it is a high speed unit. Anything that needs blending on low would not do well with this. I still have my mixer and use it for low speeds. My Ninja did come with a "dough blade" and I do use that for pie crust, bread dough, etc. I have not done egg whites, but I imagine it would do well as the high speed does incorporate a lot if air. Whipping cream does well. see less The Ninja can easily do cookie dough and cake batters. But it is a high speed unit. Anything that needs blending on low would not do well with this. I still have my mixer and use it for low speeds. My Ninja did come with a "dough blade" and I do use that for pie crust, bread dough, etc. I have not done egg whites, but I imagine it would do well as the high speed does incorporate a lot if air. Whipping cream does well.
By Scrapbook Grandma on December 15, 2014

I know this is late, but they have some on ebay for good price, single serve cups and lids for all the Ninja Blenders.
By D. Loken on February 3, 2015

You cannot put HOT liquids in it, but you can put warm liquid into it.
By Scottish Lass on November 20, 2018

I do not use a dishwasher to clean mine. I have a brush used specifically for glasses to clean mine which removes all particles in any corner.
By Emannnn on July 4, 2020