So my boyfriend's 10-year old son has stated that his Science Fair project for this year is various foods that mold or rot and what their rates of decay are...
The problem is that he should have started the project a month ago and now has less than two weeks to create the offending displays.
His idea included McD's French Fries but I (the family foodie) let him know that he is unlikely to witness any decay in those; they just shrink a little and get hard. Breads and cheeses - those things I am more familiar with going bad - take a while to develop.
Any suggestions of which foods might produce the best sort decomposition in a short period of time?