Translucent spheres of intensely flavoured olive juice that burst in the mouth — Ferran Adrià's most iconic modernist creation.
⭐Inspired by Ferran Adrià · 🇪🇸 SpainThis 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.
Serves 4
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.
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.
Whisk 5g calcium chloride into 500ml distilled water until fully dissolved. Pour into a wide shallow bowl.
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.
Leave each sphere in the bath for exactly 90 seconds. Longer and the membrane gets too thick; shorter and they break.
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.
Distilled water is non-negotiable — tap water has minerals that disrupt the reaction.
A digital scale accurate to 0.1g is essential for the alginate weight.
Eat within 15 minutes of forming — the spheres slowly thicken and lose their burst quality.
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.
Cannot be stored. Eat within 15 minutes of forming.
Ferran Adrià created the spherified olive at elBulli in 2003. It became one of the most internationally celebrated single dishes of the 21st century and the symbol of modernist cuisine. The technique (reverse spherification) was developed over years of research with Adrià's brother Albert and a team of chefs and food scientists.
Reverse spherification requires precise weighing of alginate (to 0.1g), refrigeration to remove air, distilled water (no minerals), and careful timing in the bath. Any small error breaks the spheres or makes the membrane too thick. It is genuinely a pro-level technique.
Direct spherification (alginate in the bath, calcium in the liquid) works for some applications, but reverse spherification — used here — produces thicker-membraned spheres that hold longer and don't continue solidifying after forming.
Online molecular gastronomy supply stores or specialty cooking-equipment retailers. Brands like Texturas (founded by Albert Adrià) are widely available. They keep indefinitely sealed.
Yes — it was on the elBulli tasting menu for several seasons and became the dish most associated with Ferran Adrià globally. Diners often described eating it as a single unforgettable experience.
Per serving (80g / 2.8 oz) · 4 servings total
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