Why does blast freezer necessary for making gelato?

Blast freezer is not necessary but does help.

- When you freeze gelato slowly in the regular freezer, the water molecules have enough time to form large ice crystals.

- This results in a coarse and icy texture.

- With a blast freezer, the gelato freezes much more rapidly, inhibiting the formation of large ice crystals.

- This results in a smoother, more consistent texture with gelato that is easier to scoop and serve.