Popping Boba Recipe: Make Bursting Flavor Spheres at Home

Instructions:

1. Combine the distilled water and Sodium Alginate powder in a tall glass container.
2. Use the immersion blender to mix on high for 2–3 minutes until the powder is fully dissolved and the solution appears milky. Be careful to avoid introducing excessive air bubbles.
3. Strain the solution through a fine-mesh sieve into a clean bowl to remove any remaining clumps. Cover and refrigerate for a minimum of 2 hours. This resting time is crucial for allowing bubbles to dissipate, resulting in clear boba.
4. Ensure the fruit purée or juice (raspberry or strawberry) is smooth and strained, containing no lumps or pulp.
5. In a separate bowl, whisk the caster sugar and Calcium Lactate powder into the fruit purée until completely dissolved. Use a digital scale for accurate measurement of the Calcium Lactate.
6. Place the flavour base in the refrigerator until thoroughly chilled (ideally, both solutions should be very cold, around 5°C/40°F).
7. Set up your stations: Cold Alginate Bath, chilled Flavor Base, and Ice-Cold Rinsing Water.
8. Fill your pipette, dropper, or squeeze bottle with the cold Flavor Base solution.
9. Hold the dropper about 6 inches (15 cm) above the surface of the cold Alginate Bath. Gently squeeze or drip the Flavor Base, one drop at a time, into the Alginate solution. Allow the drops to sink and form spheres.
10. Allow the boba spheres to 'cure' in the Alginate bath for 30–60 seconds. Do not leave them longer than 90 seconds, or the shell will become too thick.
11. Using the slotted spoon, gently scoop the boba out of the Alginate bath and immediately transfer them into the bowl of ice-cold rinsing water to stop the setting process. Swirl gently.
12. Drain the rinsed boba from the cold water. Store the finished Popping Boba in a clean, airtight container covered with a small amount of clean water or the original fruit juice/syrup. Refrigerate immediately and use within 2-3 days.