Eat Your Poison, Dear — James Howe

Cafeteria food may be hazardous to your health.
Poor Milo Groot -- he's sprawled on the cafeteria floor, his cracked glasses inches away from his white face. Could it be the apple chili dogs?
Could it be poison?
Kids at the middle school are dropping like flies, and Sebastian Barth suspects there's something fishier than tuna dreamboats behind the epidemic. The trouble is, too many cooks have had the chance to spoil the stew.
Sebastian finds out.
At least he thinks he does, but he soon discovers that whipping up a dramatic disclosure without all the ingredients is a recipe for disaster.