This fruit, which grows on a vine and is completely new to me, apparently has many names mostly depending on which part of the world it is grown in. The grocery store I bought it at calls it Indian Bitter Melon. After doing just a tiny bit of research, I learned that the Hindi name is Karela.
Setups
First Photo: The background and tabletop are a single sheet of dark green art paper. A small continuous-light lamp fitted with a diffusion sock to soften the shadow is behind, above and to the right of the subject. A white reflector in the left front area brightens the front of the subject. A polarizer controls the glare on the tabletop.
Second Photo: This is a macro photo of the same piece of fruit though cut to display a cross section. The background is the same sheet of art paper used in the first photo. The same, small, continuous-light lamp but with the diffusion sock removed is on the right side of the subject, raking light across it to display the texture. It is flagged to prevent too much light from falling on the background. A polarizer was used again but this time to control glare on the subject, not the paper.