Boba Pearls (“Guck Pearls”) are gel-shell calcium alginate spheres with liquid filling.
Mix 2 g sodium alginate (E401) with 200 g (low Calcium !) water and leave the mixture to stand for about 1 hour. Add 50 g syrup and drip the mixture into a calcium chloride bath (2.5 g calcium chloride (E509) in 500 g water). Remove the pearls after about 1 min and rinse them with water.
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