I am trying to optimize the shape of a food container with an opening at the top (meaning lowest surface area to volume ratio) that can be eaten from but I have no idea what shape can replace a cylinder. I have already tried shapes related to hemispheres such as a bowl or indented hemisphere but I have realized that a normal hemisphere (without modifications to its shape which will always increase the surface area to volume ratio), has a greater surface area to volume ratio than a cylinder.
Also, the shape should not be a sphere with a hole at the top as it would be hard to eat from (although it is an answer to the question).
Thanks everybody!