The period of life, commonly experienced during childhood, when a person's taste is limited to those foods/treats considered "yummy." Having not yet developed an appreciation for such acquired tastes as coffee, beer or wine, certain vegetables, cigars, etc, a person in the yummy phase tends to favor the flavor of such savory treats as sugary sweets that some older adults deem "too rich" to be consumed in such quantities. Although the yummy phase is most often associated with youth, it can sometimes continue later into life, even persisting for some throughout their lifetime.
As she was still in the yummy phase, she added only a splash of coffee to her jug of creamer, and only as a means of disguising her consumption of the thick, white concoction as "drinking coffee."
by Lucky Lymon July 4, 2011