Quick Answer
A shaker cup mixes tea, syrup, milk and ice and chills the drink fast. Foam black tea, popular in Taiwan before pearl milk tea appeared, was made by shaking tea, sugar and ice into a fine foam. The key to shaking correctly: fill to the right level, close the lid tightly, hold both body and lid, and shake up and down quickly for a few seconds. High-volume shops can switch to a shaker machine to reduce labor and keep every cup consistent.
Choosing a Shaker Size
Choose a shaker somewhat larger than the finished cup so there’s room to shake. For a 500ml drink use a larger shaker, and a size up again for 700ml. Tang Sugar supplies 530ml and 700ml shakers.
How to Shake
- Add ingredients in order: tea → syrup (weighed) → milk → ice.
- Don’t overfill: leave room to shake.
- Close the lid tightly: align and press lid and body together.
- Use both hands: one on the body, one pressing the lid.
- Shake up and down quickly: so ice and ingredients mix thoroughly.
- Pour: open the small cap or the whole lid and pour into the cup.
Shaking time and force affect foam and temperature, so standardize the seconds in your SOP. For the history of foam black tea, see The Origin of Bubble Tea in Taiwan.
What If the Shaker Won’t Open?
When shaking iced drinks, the temperature inside drops and the air contracts, which can suck the lid tight. Tap the edge of the lid or wait a moment before opening; don’t pry it, or the shaker may deform.
Shaker Cup or Shaker Machine?
| Comparison | Shaker cup | Shaker machine |
|---|---|---|
| Labor | Each cup shaken by hand | Machine shakes |
| Consistency | Depends on staff technique | Fixed time and force |
| Volume | Small to medium | High peak volume |
| Cost | Low | Equipment investment |
Other Everyday Tools
Measuring cups, ounce cups, double-ended stirrers, powder scoops, topping strainers, tea strainers, insulated tea barrels, syrup pumps and squeeze bottles are used every day; see How to Open a Bubble Tea Shop.
Tang Sugar’s Tools and Equipment
Tang Sugar supplies 530ml and 700ml shakers, a horizontal shaker machine (110V), and tools such as measuring cups, ounce cups, stirrers, topping strainers and insulated tea barrels. Contact us.
Products in this article
All 5 Tea Shop Equipment →
FAQ
How do you shake bubble tea in a shaker cup?
Add tea, syrup, milk and ice in order without overfilling, close tightly, hold body and lid with both hands and shake up and down quickly.
What if my shaker cup gets stuck?
Shaking iced drinks can create negative pressure inside; tap the lid edge or wait a moment before opening, and don’t pry.
What size shaker do I need?
Somewhat larger than the finished cup, to leave room to shake; Tang Sugar offers 530ml and 700ml.
When does a shop need a shaker machine?
When volume is high and you want consistent shaking time and force for every cup.
Where can shops buy commercial shakers?
From bubble tea equipment or tool suppliers; choose capacity by your cup size and check that the lid seals well and is easy to clean. Tang Sugar offers 530ml and 700ml shakers and a 110V horizontal shaker machine.
Further Reading
- Bubble Milk Tea Recipe: 6 Shop Steps
- Bubble Tea Sugar and Ice Levels Explained
- How to Open a Bubble Tea Shop
- What Is Cup Walling?
- How to Use Pudding and Jelly Powders
Sources
- Wikipedia: Bubble tea (foam black tea as the forerunner of bubble tea)
- Tang Sugar product list (March 2026 edition)
