Frozen raw pearls go straight into boiling water with 1–2 minutes added to the cook time and often beat an old bag of dry pearls. Never freeze cooked pearls — they thaw grainy. Fresh (refrigerated raw) pearls cook fastest and taste best, but only keep a few days.
The three formats
| Dry pearls | Fresh / refrigerated raw | Frozen raw | |
|---|---|---|---|
| Cook time | 25–30 min plus 20 rest | 5–8 min | 7–12 min from frozen |
| Shelf life | 12 months sealed | 3–5 days | 3 months |
| Texture | Good, worse as the bag ages | Best | Very close to fresh |
| Cost | Lowest | Highest | Middle |
| Best for | Home use, low volume | Shops with daily turnover | Events and batch prep |
Why frozen works so well
Freezing raw pearls locks the starch before it has been gelatinised, so nothing is damaged. Cooking from frozen also stops the outside overcooking while the centre thaws — which is exactly what happens if you defrost them first. Dust homemade pearls in tapioca starch and freeze them spread out on a tray so they do not fuse.
Why you should never freeze cooked pearls
Cooked tapioca is a water-filled starch gel. Ice crystals rupture that structure, and on thawing the pearls turn grainy on the outside and hollow in the middle. No reheating method recovers it. If you have leftover cooked pearls, hold them in syrup and use them within 24 hours instead.
Ageing dry pearls
An open bag of dry pearls absorbs moisture and cooks unevenly, giving hard white centres however long you boil. If you are getting chalky cores from a bag that has been open for months, that is why — not your cooking. Decant into an airtight jar and use within about three months.
People also ask
- What are the bubbles in bubble tea made of?
- Tapioca pearls: cassava starch, water and brown sugar. The name itself comes from the foam on a shaken tea. Read the full answer
- What is popping boba made of?
- Fruit juice sealed in a thin seaweed-derived alginate skin, set with calcium — no tapioca and no gelatin. Read the full answer
- What is crystal boba?
- Translucent agar jelly pearls with a springy bite and roughly a third of the calories of tapioca. Read the full answer
- Crystal boba or tapioca pearls — which should you use?
- Crystal boba is lighter, clearer and holds texture for hours; tapioca gives the classic dense chew of a milk tea. Read the full answer
Building a boba business?
Our hands-on bubble tea training in London covers drink prep, machines, costing and menu build, taught by the team running our Fulham bar every day.
