Vol. XXX · The Cuisines of the World Plate 3 of 11Mediterranean, olive oil, extra virgin, Spain, Greece, Levant, Turkey, hummus, tahini, lemon, garlic, allioli, mezze, tapas, chickpeas, balance, sour, salt, Mediterranean dietF

The Mediterranean.

A bowl of hummus is chickpeas, tahini, lemon, garlic and salt. Taste it with too little lemon and it is heavy; with the right amount, it lifts.

The olive tree grows wherever the Mediterranean climate does — hot dry summers, mild wet winters — and olive oil is the fat of the whole region. Extra virgin olive oil is pressed from sound olives without heat or solvents and must have free acidity below 0.8 % and no sensory defects; its bitterness and peppery catch come from polyphenols, its fruitiness from fresh aromas (IX.1). Wheat (bread, bulgur, couscous, pasta), pulses (chickpeas, lentils, broad beans), vegetables, herbs, lemons, garlic, yogurt and cheese from sheep and goats, fish, and modest amounts of meat make up the rest — the pattern nutritionists call the Mediterranean diet.

The cooking shares a habit of balance. Spain's tapas and allioli (garlic and oil pounded into an emulsion, X.4), Greece's tzatziki and avgolemono, the Levant's mezze — hummus, baba ghanoush, tabbouleh, labneh — and Turkey's grilled meats with sumac onions all set rich ingredients (oil, tahini, nuts, lamb) against acid (lemon, vinegar, sumac, pomegranate molasses) and salt, with garlic or herbs for pungency. Acid brightens: it makes fatty food taste lighter and sharpens other flavours (XI.4). The workshop balances a hummus.

Below: the perceived tastes of a 500 g batch of hummus seasoned with the lemon juice and salt you choose (lemon juice about 6 % citric acid; tahini and chickpeas contribute a little bitterness and umami; course flavour bench with taste interactions), and its balance score.

What you will learn

Know Mediterranean staples and olive oil grades.
Balance fat with acid and salt.
Make hummus and allioli.
Use lemon to brighten.

Workshop

Teaching composition per 500 g of hummus: 250 g cooked chickpeas, 100 g tahini, garlic, water; lemon juice 6 % citric acid; tahini's bitterness counted as 0.0004 % quinine-equivalent per 100 g and chickpeas' umami as 0.03 % MSG-equivalent (teaching). Course flavour bench: Stevens's-law intensities with salt suppressing bitterness and sweet suppressing sour; balance against a teaching target for a savoury dip (little sweetness, well salted, clearly sour).

Fat needs acid

In the flavour bench the hummus with no lemon scores 0.33 for balance — heavy and flat; with 45 mL of lemon juice it reaches 0.92; with 100 mL it overshoots to 0.71, sharp. Salt matters as much: the same 45 mL with only 1 g of salt scores 0.36. The model's numbers are teaching values, but the lesson is the cook's: season rich dips with acid and salt together, tasting as you go.

Hummus (about 500 g): blend 250 g well-cooked, warm chickpeas (soaked dried chickpeas cooked very soft with a pinch of bicarbonate, XX.8) with 100 g tahini, 1 small garlic clove, 45 mL lemon juice and 5 g salt; with the motor running add 3–5 tbsp ice-cold water until pale and silky. Taste and adjust lemon and salt. Serve spread in a shallow bowl with a well of extra virgin olive oil, a pinch of cumin or sumac. Allioli the Catalan way pounds garlic with salt in a mortar and adds olive oil drop by drop into an emulsion without egg; most cooks add a yolk for safety of the emulsion (X.4).

At the stove

Make a small hummus without lemon, taste it, then add lemon a spoonful at a time, tasting after each. Note where it brightens and where it turns sharp.

Olive oil has been pressed around the Mediterranean for at least 6 000 years; Greek and Roman writers graded it as carefully as wine, and amphorae of oil were stamped with their origin — the ancestors of today's protected designations.

Terms

Extra virgin olive oil: Mechanically pressed, free acidity ≤ 0.8 %, no defects.
Mezze / tapas: Small shared dishes of the Levant and Spain.
Tahini: Ground sesame paste.
Allioli: Garlic and oil pounded into an emulsion.

The Mediterranean cooks with olive oil — extra virgin: ≤ 0.8 % acidity, pressed without heat — wheat, pulses, vegetables, lemon and garlic. Its dips set fat against acid and salt: lemon brightens; season with both, by taste.

Sources

International Olive Council, Trade Standard Applying to Olive Oils and Olive Pomace Oils (COI/T.15/NC No 3): extra virgin olive oil has free acidity of no more than 0.8 g per 100 g (as oleic acid) and no sensory defects; Regulation (EU) 2022/2104 uses the same limit.
S. S. Stevens, Psychophysics, Wiley, 1975: taste intensity grows as a power of concentration; exponents near 1.3 for sucrose and sodium chloride. The course uses teaching exponents near the published ones.
A teaching value chosen for the course: the right order of magnitude and shape, not a measurement of a particular food.