Abstract: Ketchup rapping apparatus having a pair of L-form racks hinged to one another, each adapted to hold a ketchup bottle in a stationary seated position, one of the racks being pivotable through 180 degrees from a back-to-back relationship with the other rack to carry its bottle to inverted vertical alignment with the other bottle, a resilient guide cup to be disposed between the mouth ends of the aligned bottles for avoiding glass-to-glass bottle contact and for guiding the bottle being inverted down into the aligned position with the other bottle, a latch for securing the pivoted rack in the inverted position to allow easy porting of the apparatus in the inverted condition, and shock absorbing pads on the bottom of the non-inverted rack enabling rapping of the latter in the inverted condition of the apparatus against a solid surface so as to jar free a clogged ketchup flow condition without damaging the apparatus or the bottles.