Experimental flour used as a component of pellet snacks
improved their expansion ratio, independent of the tuber flesh colour
and potato variety. Snacks supplemented with coloured flour
were noticeably more expanded than control snacks. The expansion
index of snacks with experimental flour ranged from 4.86 to
5.59 and was approximately 40% higher compared to traditional
snacks (on average 3.83). The greatest expansions were observed
from the addition of flour from Salad Blue, Herbie 26 and Valfi
potato varieties.