Today is 4 July, and US snack food manufacturers have seized the opportunity to leverage the heightened level of patriotism by selling star-spangled food products. Stars and stripes have been added to brownies and cakes, ice cream, confectionery and even chips. It is common for red, white and blue to have a higher profile on snack foods around 4 July, but this year even more manufacturers have jumped on the bandwagon in a bid to tap the national enthusiasm which has sent sales of flags soaring.