Citrus Cubes

These citrus cubes are the homemade answer to those wobbly orange jelly candies in cellophane wrappers, but built from actual grapefruit and orange juice instead of artificial flavor and food coloring. Just four tablespoons of unflavored gelatin and a few tablespoons of sugar are doing all the work.

The technique is dead simple but the proportions are key. The gelatin softens first in cold grapefruit juice (this prevents lumps), then boiling orange juice melts it completely and sets the structure as it chills. The orange extract amplifies the flavor so the cubes don’t taste muted.

This isn’t a sweet jelly candy. With only 2 tablespoons of sugar in the entire batch, the cubes lean tart and citrus-forward, more like a pate de fruits than a gummy bear. The grapefruit edge keeps things grown-up and refreshing, especially after a heavy meal.

Chopped walnuts on top add crunch and a slight bitter contrast that plays nicely with the bright citrus. Skip them if you want pure jelly squares.

Pro Tips

• Use freshly squeezed juice if you can; the bright top notes are what make these cubes worth the effort.
• Don’t boil the juice for too long once it’s hot; over-reducing concentrates the bitterness from the grapefruit pith.
• Lightly oil the 8-inch pan before pouring; the cubes pop out cleanly without a non-stick spray flavor.
• Cut into squares with a knife dipped in hot water for clean, glossy edges.

Variations

• Sub a tablespoon of honey for the sugar to deepen the citrus flavor.
• Add a tablespoon of finely grated orange zest for a more intense citrus aroma.
• Use blood orange or pink grapefruit juice for a rosy color and slightly sweeter profile.