About peeling grapefruit
I use a serrated knife to cut off the ends of the grapefruit, then I place the cut side down on the cutting board. I follow the contour of the grapefruit and cut off as much of the peel and as little of the fruit as possible. Once it's peeled, I hold the grapefruit in my hand over a bowl to catch the juice, and take my knife and cut close to the membrane of each section. Then I turn the knife edge towards me and bring it up to "scoop" out the individual section. I squeeze any juice and fruit/pulp that remains into the bowl and either use it in a recipe, or drink it.