A commercial blender is a type of blender that is specifically designed for use in commercial settings such as restaurants, smoothie shops, and other food service businesses. These blenders are generally more powerful and durable than consumer-grade blenders, as they are built to withstand frequent use and handle a wide variety of ingredients.

Some features that are commonly found in commercial blenders include:
High power motors: Commercial blenders typically have motors that range from 1-3 horsepower or more, which allows them to blend even tough ingredients like ice and frozen fruits with ease.
Large blending containers: Many commercial blenders come with large blending containers that can hold several gallons of ingredients at a time, making them ideal for preparing large batches of food.
Robust construction: Commercial blenders are often made with heavy-duty materials such as stainless steel, which makes them more durable and resistant to wear and tear than consumer-grade blenders.
Multiple speed options: Many commercial blenders have multiple speed options, which allows the user to fine-tune the blending speed to suit the ingredients and desired consistency.
Easy to clean: Most commercial blender come with easy-to-clean design for quick and effective cleaning between uses.

Some common applications of commercial blenders include:
Making smoothies and other drinks: Commercial blenders are often used to blend fruits and vegetables to make smoothies, juices, and other drinks. They can quickly puree ingredients to create a smooth, consistent consistency.
Making soups and sauces: Commercial blenders can also be used to make soups and sauces. They can blend large quantities of ingredients, such as vegetables and stocks, to create a smooth consistency. They also have powerful motors that can handle blending tough ingredients like cooked meats, nuts and seeds.
Grinding and chopping: Commercial blenders also have powerful motors that can grind and chop ingredients such as coffee beans, nuts, and seeds. They can also be used to make dips, like hummus and guacamole, by blending together ingredients like chickpeas, avocado, and garlic.
Preparing marinade and purees: Some commercial blender models come with a specialized jug that allows make purées, marinade and dressings with fine textures.
Commercial blenders also come in a variety of different sizes and styles to suit different needs. Some have large, container-like jugs that are perfect for blending large quantities of ingredients, while others have smaller, personal-sized jugs that are better for individual servings.

Cleaning a commercial blender can be a bit more involved than cleaning a typical household blender. Here are some general steps you can take to clean your commercial blender:
Unplug the blender and remove the pitcher or container from the base.
Pour a small amount of warm water and a drop of dish soap into the container. Replace the lid and blend on the lowest speed for about 15 seconds to loosen any food particles.
Rinse out the container with warm water and use a cleaning brush to scrub away any remaining food particles. Be sure to clean the blades, as well as the gasket and the inside of the lid.
Wipe down the exterior of the blender with a damp cloth.
Rinse the container one more time and dry it with a clean cloth or towel.
Reassemble the blender and plug it in.
It's also a good idea to periodically check the blades for dullness and damage. Blunt blades can make blending less effective and may require professional sharpening.