First, experienced bartenders can master the pouring technique and accurately measure the amount of various spirits. If you're experienced, you can pour at will. If you're a beginner, you need a measuring cup, which helps you measure the spirits.
Second, professional bar tools are mostly Boston shakers, while beginner bar tools are mostly cobbler shakers. Boston shakers are easy to open and close; once closed, you can gently tap them open when you're done shaking. Beginner shakers are typically cobbler shakers, which have a three-layer structure: the first layer is the shaker itself, the second layer is the strainer, and the third layer is the lid.
Again, the professional shaker is the Boston shaker. If you want to buy all cocktail supplies at once, then you can choose a set. Boston shaker sets can be found in many stores or large supermarkets. You can also buy them at Skycorps stores. Here is the purchase link:
6-pieces Boston Shaker
Many beginners can use a muddler to make basic cocktails, but if you want to make more advanced cocktails, you must use a Hawthorne strainer. The muddler itself comes with a filter, and it can also filter out large ice cubes, large ingredients, etc.
Many professional bartenders can use the right tools effectively. They are skilled in bartending for years and can use the same tools for different types of spirits to make precise mixtures.
