Roasted & charred
roasted-pepper strips
pimientos asados en tiras · Whole peppers charred directly over high heat until the skin is completely blackened, then steamed in their own residual heat to loosen the epidermis, which is peeled away by hand. The cleaned flesh is then split, seeded, cored and sliced into strips. The result is a sweet, smoky, slightly caramelised foundation component with a soft, yielding texture and concentrated flavour. It is not a finished dish but a ready-to-use aromatic and textural element.
The formula
1 kg whole peppers → ~500 g cleaned strips (1 : 0.5 by weight)
The ratio is the transformation itself: roughly half the raw weight is lost to char, steam and removal of skin, seeds and core. No added ingredients are required for the base; oil and salt are finish-only, not part of the formula.
Identity
- Direct flame charring is non-negotiable — oven roasting alone does not develop the same depth
- Steaming in sealed container is non-negotiable — dry cooling allows skin to re-adhere
- All skin must be removed — even tiny specks of char will impart bitter, acrid notes
- All seeds and white pith must be removed — pith contains bitter alkaloids and retains moisture that causes weeping
- Strips should be cut at ~5 mm width — thin enough to fold, thick enough to hold texture when warmed in sauce or oil
Ingredients
| Base | Whole fresh bell peppers or pointed peppers | Any colour works; red, yellow, orange are sweeter; green are more vegetal and slightly bitter. Mixed yields best complexity. Pointed pimientos de Padrón or piquillo are traditional in Spain and yield exceptional flavour. |
| Fat | Extra-virgin olive oil (for storing or finishing) | Not part of the core recipe; only for covering strips when storing or for a light finish before service. Use a fruity, mid-grade oil. |
| Seasoning | Flaky sea salt (for storing or finishing) | Added only after cleaning, to season the finished strips or preserve them under oil. Never season before roasting — salt draws moisture and prevents proper char. |
Method
- 1Char the peppers directly over a gas flame on a wire rack set over the burner, or under a preheated broiler set to maximum heat. Place peppers directly on the flame bars or on a wire rack 10–12 cm from the broiler element. Using long tongs, rotate the peppers every 60–90 seconds as each side blackens.Direct radiant heat chars the skin rapidly through pyrolysis, converting surface starches to aromatic compounds. This controlled burning — not cooking — is what distinguishes the technique from oven roasting and is what creates the characteristic sweet-smoky flavour.
- 2As each side blackens and the skin begins to lift and blister evenly, transfer the pepper to a large heatproof bowl. Immediately cover the bowl tightly with plastic wrap or a fitting lid, creating a steam chamber.Trapped steam raises the temperature of the flesh and the moisture layer beneath the skin, converting the pectin layer from a dry, papery state into a moist gel. The skin separates cleanly within 8–12 minutes, requiring only gentle rubbing to remove.
- 3After 10 minutes, remove the cover. Using your fingers or the edge of a small knife, rub away all charred skin — it will lift without resistance. Do not rinse under water; the surface moisture carries soluble flavour compounds.Rinsing would wash away the water-soluble pyrazines and furanones created during charring, which are responsible for the roasted, nutty aroma. Rubbing dry preserves these compounds on the flesh surface.
- 4Holding the pepper upright, cut from the crown down one side through the flesh wall to open it flat. Peel away and discard the core and all seeds. Remove any remaining white pith. Lay the opened pepper flat and slice into strips ~5 mm wide, cutting across the natural rib lines.Seeds and pith are moisture-rich and contain bitter-tasting alkaloids and chlorophyll degradation products. Cutting across the ribs rather than parallel to them shortens the fibre cell walls, giving strips that are tender yet hold their shape when warmed.
- 5Transfer strips to a clean, dry container. If storing, cover completely with extra-virgin olive oil, ensuring no flesh is exposed to air. Refrigerate.A complete oil seal excludes oxygen and prevents the growth of spoilage organisms. The oil also acts as a flavour carrier, slowly infusing the peppers with fruity aromatic compounds over 24–48 hours.
Techniques that matter
Direct flame pyrolysis
Rapid surface charring induces Maillard-like browning without cooking the interior, preserving the texture of the flesh until steaming completes the cook.
Steam convective separation
Conducted heat via steam raises the interface temperature between skin and flesh, dissolving the pectin that binds them, allowing skin removal without heat damage to the underlying parenchyma cells.
Drying by evaporation
After peeling, leaving strips uncovered in refrigeration for 30 minutes before covering with oil drives off surface moisture, preventing a water–oil emulsion from forming during storage.
Variations & derivatives
Piquillo peppers (Spain)Navarre, Spain
Small, pointed, traditionally roasted in earthenware pots over oak embers, then peeled and canned. When used as strips they are often packed in their own juices rather than oil. More intensely smoky and less sweet than modern bell hybrids.
Roasted red peppers in oil (Italy)Italy
Italian practice often calls for a light dusting of oregano and a generous pour of olive oil after peeling. Some recipes add a whole garlic clove to the oil. Strips are served at room temperature as part of an antipasto.
Sautéed roasted pepper stripsFrance / Provençal
After peeling, strips are briefly sautéed in a hot pan with a little olive oil and a squeeze of lemon — called 'pimientos del Padrón revenus'. The brief dry heat concentrates flavour further and adds a slight caramelisation to the cut faces.
Used in these dishes
Substitutions
- Fresh whole peppers → jarred roasted peppers (preserved in oil or brine) — Acceptable in emergencies but inferior: commercial processors often use pasteurisation rather than direct char, yielding a steamed rather than roasted flavour. The texture is softer and the aromatic pyrazines are significantly reduced.changes result
- Bell peppers → Anaheim or New Mexico chiles — Anaheim peppers have thinner walls and roast more quickly. They yield less flesh per pepper but develop a more pronounced earthy, slightly spicy flavour. Reduce steaming time by 3–4 minutes.
Troubleshooting
Skin does not lift cleanly, adheres in patches
Insufficient char time or insufficient steam — the pectin was not adequately dissolved. Under-charring is the most common cause. → Return the pepper to the flame for 60–90 more seconds per side until the char is even and the skin visibly lifts. Re-steam in a sealed bag or bowl for 5 additional minutes.
Strips are waterlogged and weep liquid in storage
Flesh was rinsed after peeling, or strips were covered with oil while still warm and wet — moisture became trapped as a separate phase. → Spread peeled, un-sliced peppers on a wire rack and air-dry in the refrigerator for 20–30 minutes before slicing and covering with oil. Use a fine mesh strainer to drain strips before transferring to storage container.
Strips taste bitter or ashy
Skin was not fully removed; residual charred epidermis dissolved into the flesh during storage, or pepper was cooked too long after peeling before oil was added, allowing oxidation of caffeic acid derivatives. → Ensure every trace of blackened skin is rubbed away. If bitterness persists, briefly blanch the strips in unsalted boiling water for 30 seconds, then drain and cool before using — this leaches surface bitterness without destroying the roasted flavour.
Strips are mushy and collapse when warmed
Steaming time was too long, overcooking the parenchyma cells and converting pectin to a soft gel, or the peppers were sliced too thin. → Use whole peppers rather than pre-sliced; slice immediately before use. If mushy strips are already made, sauté them in a hot dry pan for 60 seconds per side to evaporate excess moisture and develop a slight caramelised surface.