Final answer:
The phrase 'hot sugar-free double torture' does not pertain to a recognized scientific concept but appears to be a metaphor for extreme physical or emotional distress. It is unrelated to the experimental heating of sugar molecules in chemistry or cooking.
Step-by-step explanation:
The phrase 'hot sugar-free double torture' does not correspond to a scientifically recognized concept in chemistry or any type of kitchen experiment. Based on the context provided, this phrase appears to be metaphorical or descriptive of extreme physical or emotional distress. In instances relating to a science experiment, the heating of sugar leads to chemical changes, such as caramelization or, at higher temperatures, carbonization. Nevertheless, the term in question seems unrelated to an actual chemical process.
The excerpts given discuss historical and brutal practices which metaphorically allude to 'torture' rather than describing a scientific phenomenon. For example, the 'ordeal by fire' from Indian history described by Abu Zayd al-Sirafi, and the 'double torture' might metaphorically refer to such historical inhumane treatments. It's important for students to engage with scientific literature or experiments with a grounded understanding of the metaphorical language used to describe adverse human experiences versus the precise language used in science.
None of the provided texts describe a science experiment related to mintining sugar molecules when heated without sugar content, and the physical torture described does not literally involve sugar. Thus, despite the inclusion of 'sugar' in the phrase, it appears to have no real connection to the science of sugar.