NetAdept Recipe Research Project Number FR9623

Research on the cooking process for fries

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Description of Research

Aim of Test

To discover a way to eliminate darkening of house made fries. While we managed to partially solve the crunchiness issue of our fries, up to 25% of our made fries cannot be sold as they get darker while being prepared.

Basis For Test

Oxygenation is the likely culprit. If the fries are kept away from oxygen, then in theory it should work. On the other hand, this is not what we are observing: What we see is even though the fries are deprived from oxygen (by being put in water), they continue to get dark. Another theory to test is a stronger protection from oxygenation (Lemon and water processing) or a protection by sealing, usually provided by initiating cooking (like boiling).

Materials & Process

  • Use Potato Type A Peeled
  • Use chip thickness of 10mm
  • Immerse in 30:1 Water/Lime Juice solution
  • Dry and Freeze

Research Results

Test 1


Immerse in the standard water/lime solution for 1.45 Hrs to remove starch, then cold dry for 6 Hrs and then freeze the fries in standard 1Kg bag for 1 Day.Then de-frost at room temperature
Consumer Trial 1(Required)
Please enter a number from 1 to 1000.
Please enter a number from 1 to 1000.
Please enter a number from 1 to 1000.

Test 2


Immerse in the standard water/lime solution for 1.45 Hrs to remove starch, rinse in tap water for 1 minute and boil in tap water for 2 minutes. Cold dry for 6 Hrs and then freeze the fries in standard 1Kg bag for 1 Day.Then de-frost at room temperature
Consumer Trial 2(Required)
Please enter a number from 1 to 1000.
Please enter a number from 1 to 1000.
Please enter a number from 1 to 1000.

Test 3


Immerse in the standard water/lime solution for 1.45 Hrs to remove starch, rinse in tap water for 1 minute and boil in tap water for 4 minutes. Dry in cool room for 6 Hrs and then freeze the fries in standard 1Kg bag for 1 Day.Then de-frost at room temperature
Consumer Trial 3(Required)
Please enter a number from 1 to 1000.
Please enter a number from 1 to 1000.
Please enter a number from 1 to 1000.

Test 4


Immerse in the standard water/lime solution for 1.45 Hrs to remove starch, rinse in tap water for 1 minute and boil in tap water for 6 minutes. Cold dry for 6 Hrs and then freeze the fries in standard 1Kg bag for 1 Day.Then de-frost at room temperature
Consumer Trial 4(Required)
Please enter a number from 1 to 1000.
Please enter a number from 1 to 1000.
Please enter a number from 1 to 1000.

Test 5


Immerse in the standard water/lime solution for 1.45 Hrs to remove starch, rinse in tap water for 1 minute and boil in tap water for 8 minutes. Cold dry for 6 Hrs and then freeze the fries in standard 1Kg bag for 1 Day.Then de-frost at room temperature
Consumer Trial 5(Required)
Please enter a number from 1 to 1000.
Please enter a number from 1 to 1000.

Test 6


Immerse in the standard water/lime solution for 1.45 Hrs to remove starch, rinse in tap water for 1 minute and boil in tap water for 10 minutes. Cold dry for 6 Hrs and then freeze the fries in standard 1Kg bag for 1 Day.Then de-frost at room temperature
Consumer Trial 6(Required)
Please enter a number from 1 to 1000.
Please enter a number from 1 to 1000.

Researcher Details

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