Just a guess as to what’s going on, but the optimum temperature for drinking hot beverages overlaps pretty exactly with the optimum temperature for microbial growth, so if these are better at retaining heat than the comparisons they would also spoil faster
Just a guess as to what’s going on, but the optimum temperature for drinking hot beverages overlaps pretty exactly with the optimum temperature for microbial growth, so if these are better at retaining heat than the comparisons they would also spoil faster