Spherified Olive 'Olives' — Adrià-Inspired

About This Recipe

This dish is inspired by Ferran Adrià's most iconic dish — the spherified olive. Created at elBulli in 2003, it became the symbol of his entire era: olive juice, transformed into a spherical 'olive' through reverse spherification with sodium alginate and calcium chloride, that bursts in the mouth releasing pure intense olive flavour. It is hard, requires precise weighing, and is genuinely one of the great creative achievements of late 20th-century cooking.

Ingredients

Serves 4

• 200 ghigh-quality green olives in brine(Manzanilla or Castelvetrano)
• 100 mlextra-virgin olive oil
• 2 gsodium alginate(powder)
• 5 gcalcium chloride(powder)
• 500 mldistilled water(for the calcium bath)
• 200 mldistilled water(for clean rinse)

Instructions

1. 1

   Make the olive juice

   Drain the olives. Blend with the olive oil and 60ml of water until completely smooth. Pass through fine sieve, then through coffee filter. You should have ~150ml of bright, intensely flavoured olive liquid.

2. 2

   Make the alginate base

   Whisk 2g sodium alginate into the olive liquid using a stick blender for 60 seconds. Strain. Refrigerate 4 hours to remove all air bubbles — non-negotiable, or your spheres will be cloudy.

3. 3

   Make the calcium bath

   Whisk 5g calcium chloride into 500ml distilled water until fully dissolved. Pour into a wide shallow bowl.

4. 4

   Form the spheres

   Using a 5ml round measuring spoon (or a Japanese flat 'caviar' spoon if you have one), gently slide a portion of olive-alginate mixture into the calcium bath. The exterior will skin instantly. Don't drop from height — slide off the spoon. Form 4-6 spheres at a time.

   Reverse spherification is the technique here — the calcium is in the bath, the alginate in the liquid. This produces thicker-skinned spheres than traditional spherification.

5. 5

   Time the spheres

   Leave each sphere in the bath for exactly 90 seconds. Longer and the membrane gets too thick; shorter and they break.

6. 6

   Rinse and serve

   Lift out with a slotted spoon, dip into the clean rinse water for 5 seconds to stop the reaction. Place 3-4 spheres on each chilled plate. Serve immediately — within 15 minutes of forming. Let diners eat in one mouthful.

Variations

• •

  Manchego Sphere: substitute manchego cheese-infused milk for olive juice.

• •

  Negroni Sphere: substitute strained negroni cocktail — sphere bursts in the mouth releasing the cocktail.

• •

  Pea Sphere: substitute pea-and-mint juice for a 'green' edition.

Storage

Cannot be stored. Eat within 15 minutes of forming.

Frequently Asked Questions