Filo Pastry

Overview

Filo (phyllo, phylo, yufka, yufak: same dough across the Mediterranean and Middle East) is the thinnest pastry in any tradition. A single sheet, properly stretched, is translucent. Twenty sheets stacked are about 5 mm thick. Baked, they shatter into the most delicate flaky crust.

The dough itself is just flour, water, salt and a little oil. It is the stretching that takes skill: a small ball is rolled, then stretched over the back of the hands until it is as wide as a tablecloth and thin enough to read newsprint through. The traditional Turkish yufka maker can do this in 90 seconds. A first-time home cook would take 30 minutes and probably tear the sheet.

For this reason, almost no one makes their own filo. Shop-bought is excellent, comes in 400 g packs of 12-15 sheets, costs little, and is the standard in every Greek-Turkish-Lebanese-Levantine kitchen. The skill that matters is the assembly: handling the fragile sheets, layering with butter or oil, and baking to the right colour.

Where to Buy

Look in the chilled or frozen section of supermarkets, or Middle Eastern and Greek delis. The most common UK brand is "Jus-Rol", though specialist brands (Antoniou, Tipiak, the various Turkish brands) are noticeably better. Indian shops sometimes carry hand-stretched filo of remarkable quality.

The pack contains roughly 12-15 sheets, each about 30 x 50 cm. Thawed filo keeps 4-5 days in the fridge; once opened it dries out within a day.

If you want to make it yourself, see Filo Pastry recipe. Use a clean cloth-covered table and a long thin rolling pin (oklava in Turkish).

The Core Rule: Keep It Covered

This is the single most important thing to know. Filo sheets dry out in about 3 minutes once exposed to air. A dry sheet crumbles, cracks and tears the moment you try to fold it.

Workflow:

1. Open the pack of filo on the counter.
2. Cover with a slightly damp clean tea towel (not wet; just damp).
3. Peel off one sheet at a time as you need it.
4. Re-cover the stack between sheets.

No exceptions. Even taking three sheets at once will partially dry the third while you handle the first.

The Brush: Butter or Oil

Each filo sheet needs a thin coat of fat between it and the next sheet. The fat keeps the sheets distinct during the bake (so they stay flaky) and seasons the pastry.

Butter: the classic choice for Greek and Turkish sweet pastries (baklava, kataifi, galaktoboureko). Melt 100-150 g unsalted butter, brush each sheet thinly. Some recipes use clarified butter (ghee or sade yag) for a higher-temperature bake without burning.

Olive oil: the classic for savoury Greek and Levantine pies (spanakopita, tyropita, bourekas). Use the best olive oil you can; it is a major flavour. About 100 ml total for a tray.

Mixed: half olive oil, half butter. Common for "modern" pastries that want some butter flavour but less weight.

Apply with a soft brush, lightly. Heavily-buttered filo bakes greasy, not crisp.

Three Assembly Patterns

1. Tray-Layered (Baklava, Galaktoboureko, Spanakopita)

The dish is filled with stacked sheets of filo on either side of a filling.

1. Brush the base of a baking dish with butter.
2. Lay one sheet of filo in the dish, fold or trim to fit. Brush with butter.
3. Repeat for 8-10 sheets. This is the base layer.
4. Add the filling (nut paste for baklava, custard for galaktoboureko, spinach-and-feta for spanakopita).
5. Lay another 8-10 sheets on top, each brushed.
6. Trim or tuck overhanging edges.
7. Score the top into portions before baking (otherwise the bake-set pastry tears the filling apart when cut).

2. Cigar / Pinwheel (Bourekas, Cigars, Roulade)

A long thin filo sheet rolled around a filling.

1. Lay one filo sheet on the bench, brush with butter.
2. Fold in half along the long edge (a double-thick rectangle).
3. Place a thin line of filling along one short edge, leaving 2 cm clear at top and bottom.
4. Fold the short sides in.
5. Roll up tightly from the filling edge to form a cigar 12-15 cm long.
6. Place seam-side down on a tray.

3. Triangular Parcels (Spanakopita Triangles, Sambousek)

Filo sheet cut into long strips and folded into triangles like a flag.

1. Lay one filo sheet, brush with butter.
2. Cut into long strips 8 cm wide.
3. Place a teaspoon of filling on the bottom-right corner of a strip.
4. Fold the filling corner up to the left edge, creating a triangle.
5. Fold straight up.
6. Fold the new bottom corner to the right edge, making another triangle.
7. Continue folding flag-style up the strip until you reach the end.
8. Brush the outside with butter, place seam-side down on a tray.

Baking

Filo bakes at moderate heat. Too hot and the outer layers burn before the centre cooks; too cool and the layers do not crisp.

• Tray-layered: 170-180 C for 30-45 minutes (longer for big trays with wet fillings).
• Cigars and triangles: 180-190 C for 20-25 minutes.
• Brush the top with extra butter halfway through for deep colour.

For sweet pastries that get a syrup (baklava, galaktoboureko): pour the cooled syrup over the pastry while the pastry is still hot from the oven. The contrast between hot pastry and cool syrup gives the best soak; reversed (cold pastry, hot syrup) produces a soggy result.

Filo vs Puff: When to Use Which

	Filo	Puff
Texture	Many distinct flaky layers, shatters	Tall puffed layers, lifts dramatically
Skill	Easy if you can keep sheets covered	Hard; full lamination is a half-day project
Suitable for	Pies, tarts, wrapped fillings, baklava	Vol-au-vents, mille-feuille, palmiers, sausage rolls
Buttering	Brush each sheet	Built into the dough
Bake heat	Moderate, 170-180 C	High, 200-220 C
Rise	Minimal (it gets crispy, not tall)	Major (4-5x rise)

In short: filo for layered flatness, puff for height.

Common Mistakes

The filo cracked when folded. Dried out. Cover the stack with a damp towel and work faster.

The pastry came out greasy. Too much butter brushed on each sheet. Apply a thin coat; you should see the sheet through the butter, not the butter over the sheet.

The baklava is soggy. Hot syrup on hot pastry, or pastry that did not fully bake before saturation. Cool the syrup completely; bake the pastry to deep gold first.

The pie filling leaked. Too few base layers. Wet fillings need at least 8 layers underneath them to prevent leak-through.

The middle is pale, the edges are dark. Oven runs hot at the edges. Rotate the tray halfway through; reduce temperature by 10 C.

The pastry has soggy patches between crispy ones. Uneven buttering. Brush each sheet edge-to-edge, including the corners.

The pastry tastes oily, not buttery. Used regular salted butter without clarifying it (or used poor-quality olive oil for a butter recipe). Use unsalted butter; consider clarifying for sweet pastries.

Where Next

• Puff and Rough Puff: the laminated alternative.
• Baklava: the canonical layered filo dessert.
• Spanakopita: the spinach-and-feta classic.
• Filo Pastry recipe: if you want to make your own.
• Pastry Course landing: back to the main course.