The bacon clearly contained higher concentrations of
HAAs both with longer frying times and at temperatures of 200–220 C rather than 150–170 C, respectively.
A similar continuous increase of the concentrations was observed for norharman (5.0–19.9 ng/g)
and harman (0.3–1.7 ng/g). The sensory evaluation, using a hedonic test design for colour and flavour,
of the pan-fried bacon slices resulted in a preferred frying time of 5 min at 150–170 C. However, some
testers clearly preferred crispy and darker bacon slices containing higher HAA concentrations.