[header] How to prepare grapefruit for serving [title] Cut the grapefruit horizontally at its center. [step] Take a large, sharp knife and cut the grapefruit horizontally into two halves. [substeps] If you are unsure where the top and bottom of the grapefruit are, find the two dots, or navels, on the grapefruit at opposite ends. 
These are the top and bottom of the grapefruit. Think of these dots as the " poles " of the grapefruit, like the poles of the earth.