Ninja is a manufacturer that makes home appliances such as blenders and ovens. Generally, their blenders have an impressive build quality and although they're mostly made of plastic, they feel solid and durable. Most of their jars, lids, and blade assemblies can go right into the dishwasher for an easy clean. Some of their blenders also include a couple of unique attachments and accessories such as a food processor or a micro-juicer. However, most can't be used to hot blend, which is a bit disappointing if you want to puree soup.
The best Ninja blender for smoothies that we've tested is the Ninja DUO. This full-size model comes with two additional 20oz jars so you can easily take your blends with you on-the-go. While we also don't currently test for it, it comes with a micro-juicer attachment so you can get an even smoother drink. This well-built option makes an impressive smoothie. Whether you're using the main jar or one of two additional jars, it can produce a silky smoothie in under two minutes when using its dedicated 'Smoothie Mode'. In this setting, your drink remains very cold and while there's a few small pieces of fibrous kale left behind, it shouldn't be too noticeable. While these kale pieces can also get stuck in the jar's seal tube, the jar, lid, and blade assemblies are all dishwasher-safe, which makes for easier cleanup.
Unfortunately, it can get very loud at max speed. If you want to make other foods like nut butter, it can be much harder to clean as the jar can remain pretty oily, even if you soak it in soap and water. That said, if you're just making smoothies, it can make an excellent drink that you can take with you on-the-go.
The best Ninja blender for multi-purpose use that we've tested is the Ninja Mega Kitchen System BL770. If you're looking for one that can do a bit of everything, this full-size model is a good option. It comes with several attachments, such as a food processor and a dough blade. It comes with a large 72oz main jar as well as two 16oz personal jars. It makes excellently smooth almond butter as well as snow-like crushed ice in less than a minute. It can make silky smoothies when using its personal jar, as well. It's also easy to clean, as all of its jars are dishwasher-safe. Although it doesn't have a speed dial, there are four different presets as well as a pulse setting.
Unfortunately, it can't hot blend, so you can't make soups or bulletproof coffee with it. It also doesn't have a self-clean program. When using its main jar, it produces just okay smoothies but the lack of a vortex adds a lot of air into your drink, producing a foamy texture. Still, if you're looking for a versatile Ninja blender that can handle making nut butter one moment and smoothies the next, this is a suitable choice.
Ninja produces a few full-size and personal blenders that excel at making silky smoothies. Most models tend to offer additional jars that are smaller so you can easily take them on the go. A couple of them also offer unique attachments like a dough blade or a micro-juicer for more versatility, which sets them apart from most other blenders. However, they have limited speed settings and most can't hot blend, which is a bit disappointing if you like to make purees or soups.
Ninja manufactures a variety of full-size and personal blenders that feel well-built and sturdy. Most come with an additional jar so that you can take your smoothies or other blends with you on-the-go. Some also come with unique attachments or accessories that give you even more versatility when processing food. However, they tend to favor preset speeds rather than a speed dial. Most Ninja blenders can't hot blend, either.