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Frozen Grapefruit & Olive Oil Slab with Torched Espresso Sugar

Frozen Grapefruit & Olive Oil Slab with Torched Espresso Sugar

A study in extremes. Ice-cold, creamy citrus meets a shattered, hot, bitter-sweet glass crust. We reduce the grapefruit juice to eliminate water keeping the freeze luxurious, not icy while the torched espresso topping delivers the thermal shock that makes this dessert unforgettable.

Theo Glass
Theo Glass
Prep: 20 minutes
Cook: 10 minutes
8
medium
dessert
frozenmake-aheadminimalistcitrus+1

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Timeline

23 minutes
0m10m20m
Reduce grapefruit juice
10m
Mix yogurt base
5m
Cool syrup and whip cream
5m
Fold batter and freeze
5m
Mix topping and slice
5m
Torch crust and serve
3m

Ingredients

  • 120 g Fresh ruby grapefruit juice(From about 1 large grapefruit)
  • 15 g Ruby grapefruit zest(From about 1 large grapefruit)
  • 100 g White sugar(For the yogurt base)
  • 250 g Whole milk Greek yogurt(Do not use low-fat; fat equals smooth texture)
  • 40 g Extra virgin olive oil(Choose a fruity, grassy profile)
  • 3 g Kosher salt(Diamond Crystal preferred)
  • 200 g Heavy cream (cold)(Keep refrigerated until the exact moment of whipping)
  • 50 g Demerara sugar(Turbinado also works for the glass crust)
  • 5 g Finely ground espresso(For the bitter contrast topping)

Instructions

  1. 1

    Pour 120g fresh ruby grapefruit juice into a small saucepan over medium heat. Simmer gently until the liquid reduces to exactly 30 grams of thick syrup, which should take about 10 minutes.

    10 min

    Tip: Why this works: Boiling off the water in the juice prevents ice crystals from forming in the final slab. We want creamy, not crunchy.

  2. 2

    While the juice is reducing, place the 15g ruby grapefruit zest and 100g white sugar in a large mixing bowl. Massage the zest into the sugar with your fingertips until it feels like wet sand. Whisk in the 250g whole milk Greek yogurt, 40g extra virgin olive oil, and 3g kosher salt until completely smooth.

    5 min

    Tip: Rubbing the zest into the sugar extracts the essential oils, creating a deeply fragrant base without adding any liquid.

  3. 3

    Transfer the reduced grapefruit syrup to a small bowl and set it over an ice bath to cool rapidly. In a separate bowl, whip the 200g heavy cream (cold) until it holds soft, pillowy peaks.

    5 min

    Tip: Fix it fast: If the cream gets grainy, you whipped too far. Add a splash of liquid heavy cream and fold gently to smooth it out.

  4. 4

    Whisk the completely cooled grapefruit syrup into your yogurt base. Gently fold in the whipped cream in two additions, keeping as much air in the mixture as possible. Pour the batter into a parchment-lined 9x5 inch loaf pan, smooth the top, and freeze until solid, at least 6 hours.

    5 min

    Tip: Line the pan with a generous overhang of parchment paper. Future you will thank present you when pulling the frozen block out.

  5. 5

    When ready to serve, whisk together the 50g demerara sugar and 5g finely ground espresso in a small bowl. Remove the frozen slab from the pan using the parchment overhang and cut into 1-inch thick slices using a knife warmed in hot water.

    5 min

    Tip: Wiping the hot knife clean between every single cut is not optional if you want sharp, restaurant-quality slices.

  6. 6

    Place the frozen slices on a heatproof surface. Dust the tops generously and evenly with the espresso sugar mixture. Ignite your blowtorch and sweep the flame about 2 inches above the surface until the sugar bubbles, darkens, and forms a hard glass crust. Serve immediately.

    3 min

    Tip: Keep the torch moving. Distance is your temperature control. If the sugar burns instead of melting, pull the flame back an inch.

Chef's Notes

Precision is freedom. The slab must be deeply frozen before torching, otherwise the heat will melt the foundation before the sugar caramelizes. I highly recommend making the slab a day in advance so all that is left for dinner service is slicing and fire.

Frequently Asked Questions

How long does Frozen Grapefruit & Olive Oil Slab with Torched Espresso Sugar take to make?

Frozen Grapefruit & Olive Oil Slab with Torched Espresso Sugar takes about 30 minutes total. That includes 20 minutes of prep and 10 minutes of cooking.

How many servings does this recipe make?

This recipe makes 8 servings.

What skill level is needed for Frozen Grapefruit & Olive Oil Slab with Torched Espresso Sugar?

This recipe is rated medium — it's intermediate, requiring some cooking experience.

What ingredients do I need for Frozen Grapefruit & Olive Oil Slab with Torched Espresso Sugar?

The main ingredients are: Fresh ruby grapefruit juice, Ruby grapefruit zest, White sugar, Whole milk Greek yogurt, Extra virgin olive oil, Kosher salt, Heavy cream (cold), Demerara sugar, Finely ground espresso.

What type of meal is Frozen Grapefruit & Olive Oil Slab with Torched Espresso Sugar?

Frozen Grapefruit & Olive Oil Slab with Torched Espresso Sugar is categorized as: dessert.