Some People Still Don’t Realize What This Tiny Hole on a Padlock Is For

The Heinz 57 “Sweet Spot”: The famous “57” embossed on Heinz ketchup glass bottles is more than historic branding. Located on the neck’s curve, it marks the optimal percussion point. A firm tap or two directly on the number, with the bottle tilted at 45 degrees, creates a shockwave that breaks the vacuum and dislodges the stubborn ketchup, enabling a smoother, controlled pour without resorting to violent shaking or bottom-slapping.