Marshmallows used as saliva stimulant do not affect cortisol concentrations: finally a palatable alternative for toddler saliva collection.
Clements AD, Parker CR, Dixon WE, Salley B. Marshmallows used as saliva stimulant do not affect cortisol concentrations: finally a palatable alternative for toddler saliva collection. Dev Psychobiol. 2007 Nov; 49(7):702-7.