A layer of grapefruit slices and a grapefruity drizzle makes this zingy upside-down cake a wake-up call for the tastebuds. It's easy to whip up for an afternoon tea treat with a difference.

In case you never experienced Slice, it was introduced in 1984 by PepsiCo. It was a lemon-lime soda that contained 10% fruit juice, and it was meant to be a competitor to Sprite. A few years later ...

Supreme the grapefruit: Remove ends of fruit with a sharp serrated knife, then slice along outside of fruit to remove peel. With a gentle sawing motion, cut along each membrane to release ...