HOLY Moly!!!! NO VINEGAR?! Sign me up! Kool Eggs Use Kool-Aid To Dye Your Easter Eggs Kool Aid to dye your Easter Eggs. Because of the citric acid already in KoolAid, this technique requires no vinegar. Not only that, but at a general cost of 5 packets for $1, KoolAid makes for an inexpensive egg dying adventure.