If you’ve ever found yourself violently shaking a bottle of Heinz Tomato Ketchup, willing the sauce to come out, you’ve probably wondered why it was made this way. Despite its shortcomings, the glass bottle, patented in 1882, was carefully designed: the smooth neck is supposed to ensure a steady stream of ketchup, while the octagonal base makes it comfortable to hold. The transparent glass was important too: the quality of commercial ketchup was often called into question, and Heinz wanted to showcase the purity of its product. Even now, with plastic squeezy bottles available, many opt for this nostalgic version.