1. Introduction
Thank you for choosing the WantJoin Boba Cooker. This appliance is designed for efficiently cooking tapioca pearls and other similar ingredients, maintaining optimal temperature for extended periods. Please read this manual thoroughly before operation to ensure safe and correct usage.
2. Safety Instructions
- Always connect the appliance to a grounded power outlet with the correct voltage (110V).
- Do not immerse the main unit, cord, or plug in water or other liquids.
- Keep the appliance out of reach of children.
- Do not operate the appliance if the cord or plug is damaged, or if the appliance malfunctions or has been damaged in any way.
- Ensure proper ventilation around the appliance during operation.
- Use only manufacturer-recommended accessories.
- Unplug the appliance from the outlet when not in use and before cleaning.
- The inner pot is not dishwasher safe.
3. Product Components
The WantJoin Boba Cooker consists of the main unit, an inner pot, and a power cord. Familiarize yourself with the key parts:

Figure 3.1: Main unit of the WantJoin Boba Cooker.

Figure 3.2: Key components including the overflow valve, switch button, silicone sealing ring, and steam water container.
- Main Unit: Houses the heating element and control panel.
- Inner Pot: Non-stick cooking pot for ingredients.
- Lid: Features an overflow valve and silicone sealing ring.
- Control Panel: Touch-sensitive interface for program selection and operation.
- Steam Water Container: Collects condensation.
4. Setup
- Unpack all components and remove any packaging materials.
- Wash the inner pot and lid with warm, soapy water. Rinse thoroughly and dry completely.
- Place the main unit on a stable, flat, heat-resistant surface, away from water sources.
- Insert the clean inner pot into the main unit.
- Ensure the steam water container is correctly positioned.
- Plug the power cord into a suitable 110V grounded electrical outlet.
5. Operating Instructions
5.1 Control Panel Overview

Figure 5.1: LED Programs Display with various cooking options.
The control panel features touch controls for various cooking programs and settings. Available programs include Tapioca Boba, Amber Pearl, Sago, Pudding, Grass Jelly, and Taro Ball, each with pre-set cooking and praise (keep warm) times.
5.2 Cooking Tapioca Pearls
- Add the desired amount of tapioca pearls (0.5-1 kg) and water to the non-stick inner pot. Refer to your pearl packaging for specific water-to-pearl ratios.
- Close the lid securely.
- Select the appropriate program (e.g., "Tapioca Boba") from the control panel.
- Press the "Start/Cancel" button to begin the cooking cycle. The cooker will automatically adjust heating for uniform cooking.
- A buzzer alert will sound when the cooking cycle is complete.

Figure 5.2: Illustration of 360-degree circulating heat for uniform cooking.
5.3 Keep Warm Function
After the cooking cycle, the cooker automatically switches to the "Keep Warm" setting. This function maintains the pearls at an optimal serving temperature for up to nine hours, preserving their chewiness.

Figure 5.3: Temperature retention profile during the 9-hour keep warm cycle.
5.4 Multi-Purpose Use
The WantJoin Boba Cooker is suitable for preparing various ingredients beyond tapioca pearls, including amber pearls, taro balls, pudding, and jam.

Figure 5.4: Examples of various ingredients that can be prepared.
5.5 Product Video
Video 5.1: An overview of the Boba Cooker machine in operation, demonstrating its hands-free functionality, 360-degree heating, and multi-purpose use for various ingredients.
6. Maintenance and Cleaning
Regular cleaning ensures the longevity and optimal performance of your Boba Cooker.
- Unplug: Always unplug the appliance from the power outlet before cleaning.
- Inner Pot: The non-stick inner pot should be washed by hand with warm, soapy water and a soft sponge. Do not use abrasive cleaners or metallic scouring pads, as these can damage the non-stick coating. Rinse thoroughly and dry completely. Do not place in a dishwasher.
- Lid: Wash the lid by hand with warm, soapy water. Pay attention to the silicone sealing ring and overflow valve to ensure no food residue remains. Rinse and dry.
- Main Unit: Wipe the exterior of the main unit with a damp cloth. Do not use harsh chemicals or immerse the unit in water.
- Steam Water Container: Empty and clean the steam water container regularly.
- Storage: Store the appliance in a dry place when not in use.

Figure 6.1: The non-stick inner pot, designed for easy cleaning.
7. Troubleshooting
If you encounter issues with your WantJoin Boba Cooker, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Appliance does not turn on. | Not plugged in; power outage; faulty outlet. | Ensure power cord is securely plugged in. Check power supply. Try a different outlet. |
| Pearls are sticking to the pot. | Insufficient water; pot not clean; damaged non-stick coating. | Ensure correct water-to-pearl ratio. Clean the pot thoroughly before use. If coating is damaged, contact support. |
| Buzzer alert not working. | Internal malfunction. | Contact customer support for assistance. |
| Keep warm function not maintaining temperature. | Lid not properly sealed; internal malfunction. | Ensure lid is closed tightly and silicone sealing ring is intact. Contact customer support. |
8. Specifications
Detailed specifications for the WantJoin Boba Cooker:

Figure 8.1: Key product specifications including voltage, power, and capacity.
- Brand: WantJoin
- Model Number: Boba Maker
- Color: Black
- Material: Plastic
- Product Dimensions (D x W x H): 9.44" x 9.84" x 11.4"
- Capacity: 5.3 Quarts (approx. 5 Liters) / 11 Pounds
- Wattage: 900 watts
- Voltage: 110 Volts
- Control Method: Touch
- Dishwasher Safe: No (Inner Pot)
- Included Components: Pot
- UPC: 723747214874
- ASIN: B0FC2MR7JL
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact WantJoin customer service. Refer to the product packaging or the official WantJoin website for contact details.