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enter image description hereI've never asked a question on here as i'm a new user, I was just wondering if someone could explain how to put bubbles into chips. Ours is a protein based chip and we had a batch that fried and had a lot of bubbles causing a different texture and more crunch but we are having troubles replicating that.

Admins you can delete this if it's not uniform enough.

We fry with Sunflower oil. The protein is mixed with tapioca starch and seasonings

  • Are you aerating your batter (e.g. whisking in air)? Are you keeping your oil temperature constant? – Dugan Oct 29 '19 at 21:54
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    You wouldn’t have a photo of the desired result (or something similar)? And a rough description of your recipe - not necessarily spilling your trade secrets, but enough to help our users to understand what you are doing? – Stephie Oct 29 '19 at 21:55
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    And in any case: welcome to Seasoned Advice! The tour and help center, especially How to Ask should explain more about how the site works. – Stephie Oct 29 '19 at 21:56
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    @Stephie How do i attach photos? I've looked in the help section. Sorry if i'm being a bother. – Ilias Anastasiadis Oct 29 '19 at 22:29
  • No problem - if you edit your post, there’s a photo/picture icon in the little menu bar. The pop-up should guide you through the steps. Just note that the size limit is 2MB per picture. – Stephie Oct 29 '19 at 22:31
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The bubbles are formed by gases expanding inside the chip as it is heated.

Do this slow enough and the bubbles will escape before the chip hardens (giving it that chip crunch).

Do this fast enough and the bubbles will be trapped.

You could try higher heat for a shorter period of time - or even very high heat to "seal" in the bubbles then finish at a lower temperature.

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@SnakeDoc hit the high points of how the bubbles form. I would add that a slight increase in moisture may help create more of a tendency to form bubbles so experiment there, a few drops at a time to keep the consistency you want to work with while getting slightly more moisture for creating the steam expansion.

Here is an article on a somewhat similar technique for inducing potato chips to puff. With them of course you cannot control texture and such, and if they puff you tend to get a single large bubble, not multiple small ones like you seem to be after, but the technique may point you into the direction. Details may require you to experiment. Summary in case page is not accessible: They recommend frying at 320F while gently shaking back and forth until a good portion of the chips start to slightly puff and rise. Then transfer chips to 365F oil. They should promptly puff more fully. Cook until crisp and to desired level. The exact details are probably not what you want, but as a starting point could help with experimenting.

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