Romesco sauce is a vibrant, smoky Spanish classic made from roasted red peppers, nuts, garlic, and olive oil. Jamie Oliver’s take on Romesco highlights fresh, simple ingredients that blend into a rich, versatile sauce perfect for grilled meats, seafood, or roasted vegetables. Its balance of nuttiness, acidity, and warmth makes it a kitchen staple that elevates many dishes.
Ingredients
- 2 large red bell peppers (roasted and peeled)
- 3-4 ripe tomatoes (roasted)
- 1 small onion (roasted)
- 2-3 garlic cloves (roasted)
- 50g toasted almonds or hazelnuts
- 1 slice of stale bread (toasted)
- 2 tbsp sherry vinegar or red wine vinegar
- 100ml extra virgin olive oil
- 1 tsp smoked paprika (preferably Spanish pimentón)
- 1 small dried chili or pinch of chili flakes (optional, for heat)
- Salt and freshly ground black pepper, to taste
Instructions
- Prepare the vegetables: Preheat your oven to 220°C (430°F). Cut the red peppers in half, remove seeds, and place cut-side down on a baking tray lined with foil. Add the tomatoes and onion (quartered) around the peppers. Toss the garlic cloves (unpeeled) with a little olive oil and add to the tray.
- Roast the vegetables: Roast everything for 25-30 minutes, turning the garlic halfway through, until the skins of the peppers are blackened and blistered and the tomatoes and onion are soft.
- Peel and prep: Once cool enough to handle, peel the skins off the peppers and garlic. Discard the skins. Squeeze the garlic out of its skin.
- Toast nuts and bread: While the vegetables roast, toast the nuts in a dry pan over medium heat for 3-5 minutes until golden and fragrant. Toast the bread slice until crisp and break it into chunks.
- Blend the sauce: In a food processor or blender, combine the peeled peppers, tomatoes, onion, garlic, toasted nuts, bread, smoked paprika, and chili (if using). Blitz to a coarse paste.
- Add vinegar and olive oil: Pour in the sherry vinegar and slowly drizzle in the olive oil while blending to emulsify the sauce. Season with salt and pepper to taste.
- Adjust consistency: If the sauce is too thick, add a splash of water or more olive oil to loosen it. The final texture should be smooth but with some body.
- Rest and serve: Let the Romesco sit for at least 30 minutes before serving to allow the flavors to meld beautifully.
Tips
- Substitutions: If you can’t find red bell peppers, roasted jarred red peppers work in a pinch but fresh roasted ones yield superior flavor. Almonds can be swapped for hazelnuts or even pine nuts depending on what you have on hand.
- Storage: Romesco sauce keeps well in an airtight container in the fridge for up to 5 days. The flavors deepen over time, making it great for meal prep.
- Common mistakes: Avoid skipping the roasting step — it’s essential for that smoky, sweet depth. Also, don’t add too much olive oil at once; adding it slowly helps achieve the right creamy texture.
- Vegan Friendly: This recipe is naturally vegan and gluten-free if you use gluten-free bread or omit it entirely (add extra nuts to compensate).
Serving Suggestions
Jamie Oliver’s Romesco sauce is incredibly versatile. Serve it alongside grilled chicken, fish, or roasted lamb to add a smoky, tangy punch. It’s also fantastic as a dip with crusty bread or raw vegetables. Try drizzling it over roasted vegetables like cauliflower or sweet potatoes, or use it as a spread in sandwiches and wraps for an extra layer of flavor. Romesco also pairs beautifully with seafood dishes such as grilled prawns or seared scallops.
Variations
For a nuttier version, increase the quantity of toasted nuts and add a handful of toasted sesame seeds. To add a smoky depth without roasting, try incorporating a small amount of smoked paprika or chipotle powder. If you prefer a chunkier sauce, pulse the ingredients less in the blender. For a brighter flavor, add a squeeze of fresh lemon juice just before serving. Some variations include adding fresh herbs like parsley or oregano for an herbal twist.
Storage and Reheating
Store Romesco sauce in a clean, airtight container in the refrigerator for up to 5 days. Because it contains fresh roasted vegetables and olive oil, it’s best consumed within this timeframe to ensure freshness and flavor. You can also freeze Romesco for up to 2 months; thaw overnight in the fridge and stir well before using.
Romesco is typically served cold or at room temperature, so reheating is not usually necessary. If you do want to warm it, gently heat it in a small pan over low heat, stirring frequently to prevent the sauce from separating or burning. Avoid microwaving directly as it can alter the texture.
Frequently Asked Questions
What is Romesco sauce traditionally served with?
Romesco sauce originates from Catalonia in Spain and is traditionally served with grilled fish, especially red mullet or monkfish, as well as roasted vegetables and grilled meats. It’s also common with calçots (Catalan green onions) during spring festivals.
Can I make Romesco sauce without a food processor?
Yes, you can finely chop all the ingredients by hand and mash them together using a mortar and pestle for a rustic texture. It will take more time and effort but results in an authentic, chunky sauce.
Is Romesco sauce spicy?
Romesco sauce usually has a mild heat level, depending on whether you add chili or not. Jamie Oliver’s recipe includes a small dried chili or chili flakes for subtle warmth, but you can adjust this according to your spice preference.
Can I use raw tomatoes instead of roasted?
Roasting tomatoes concentrates their flavor and adds sweetness, which is key to the sauce’s depth. Using raw tomatoes will produce a fresher but less rich sauce. If you must use raw, consider adding a pinch of sugar and a bit more olive oil to compensate.
How long does Romesco sauce last once made?
Stored in an airtight container in the fridge, Romesco sauce lasts about 5 days. Always check for off smells or mold before use. Freezing extends its shelf life to about 2 months.
Can I use Romesco sauce as a marinade?
Absolutely. Romesco makes an excellent marinade or basting sauce for grilled meats and vegetables, imparting smoky, nutty, and tangy flavors. Marinate for at least 30 minutes before cooking for best results.
Jamie Oliver’s Romesco sauce recipe combines simple roasting techniques with quality ingredients to create a deliciously smoky and nutty sauce that’s easy to make at home. Whether used as a dip, spread, or accompaniment, it’s a fantastic way to brighten up everyday meals with authentic Spanish flair.
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