Why Is Toffee Chewy and What Are the Mechanical Properties of Chocolate?

  • Context: High School 
  • Thread starter Thread starter meawinner
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Discussion Overview

The discussion centers around the mechanical properties of chocolate and toffee, specifically exploring why toffee is chewy and sticky. Participants also touch on the properties of chocolate, including its behavior when melted and solidified, as well as the implications for a student's coursework and presentation.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant inquires about the reasons for the chewiness and stickiness of toffee and the mechanical properties of chocolate and toffee.
  • Another participant mentions that chocolate causes an endothermic reaction in the mouth due to the breaking of bonds in chocolate crystals, suggesting that this is related to the specific conditions under which chocolate is made.
  • A teacher advises the student to consider a more mainstream material for their presentation, indicating that chocolate may not meet the criteria set by exam boards.
  • A suggestion is made to contact a confectionery professional for insights, specifically mentioning a brother who works in the confectionery business and has relevant expertise.

Areas of Agreement / Disagreement

Participants express differing views on the suitability of chocolate as a presentation topic, with some supporting its exploration while others recommend alternatives. There is no consensus on the mechanical properties of chocolate and toffee, as specific details remain unaddressed.

Contextual Notes

The discussion lacks detailed definitions of mechanical properties and does not resolve the complexities of chocolate crystallization or the specific factors contributing to the texture of toffee.

Who May Find This Useful

Students interested in materials science, particularly in the context of food science, as well as educators and professionals in confectionery and related fields.

meawinner
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Hi I am a physics AS student who has to do a piece of coursework and give a presentation on a material. I have chosen to do chocolate and confectionery and I am wondering if any of you knew why toffee is so chewy and sticky? Also if you knew what the mechanical properties of chocolate or toffee were? If you don't know, do u know any websites that may help me with this. Thanks for all your help
 
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Choclate has some interesting properties, for example when you eat it it causes an endothermic reaction your mouth (IIRC from the breaking of the bonds in the crystals of choclate). This is property of only one kind of the choclate crystals which randomly form when molten choclate is soldified so when choclate has to be made under special conditons and if you melt it and resoldif it you will not get that cool sensation whi8ch gives choclate much of it's appeal.
 
Hi there
As an AS teacher, can I recommend that you do a more 'mainstream' material. Yes, chocolate can be interesting, but sadly the exam boards these days have a 'tick sheet' mentality and your presentation, no matter how well done, will be marked by a set criteria. It will be hard to fulfill these with your chosen topic..
 
Send your question to my brother Richard. He could probably give you an answer seeing that he is in the confectionary business, makes Toffee and also has a degree in food technology.

His e-mail is:
richard@chocolatetruffles.com


-Glenn
 

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