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Spring onion-Oil Noodles

These spring onion oil noodles are a classic example of how a few humble ingredients can be transformed into a deeply savoury and comforting vegan meal. The secret lies in the slow-infusion process, where fresh spring onions are gently fried until crisp and golden. This technique creates a fragrant, aromatic oil that coats every strand of noodle with a rich, complex flavour. It is a wonderful dish for those who appreciate the balance of silky textures and a delicate crunch.

Perfect for a quick midweek dinner or a relaxed weekend lunch, this recipe is remarkably versatile. While the crispy onions provide a beautiful garnish, the infused oil can be made in advance and kept in the fridge for a speedy flavour boost to other dishes. Serve these noodles warm as a satisfying main course, perhaps followed by a light cucumber salad to balance the richness of the soy and oil dressing.

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Ingredients for Spring onion-Oil Noodles

  • 10 spring onions

  • 180ml grapeseed or vegetable oil

  • 450g fresh Shanghai or lo mein noodles or dried lo mein noodles

  • 120ml soy paste

  • 2 tablespoons soy sauce

Cut spring onions crosswise into thirds, separating dark green parts from white and pale green parts. Slice lengthwise into very thin strips, keeping dark green and white parts separate.

Pour oil into a cold large wok or high-sided skillet. Add white parts of spring onions to oil and set over medium-low. Cook until oil starts to bubble, about 5 minutes. Add dark green parts of spring onions and stir to combine. Cook, stirring occasionally, until spring onions are crisped and deep golden brown, 20–30 minutes. Do not rush this; slow, gradual browning as the liquid in the spring onions evaporates will yield the best flavour.

Using a spider or slotted spoon, transfer spring onions to paper towels to drain. Let spring onions and oil cool. Pour oil through a fine-mesh sieve into an airtight container; discard solids. Cover and chill spring onion oil until ready to use.

Cook noodles in a large pot of boiling water according to manufacturer’s directions, adding 1 tablespoon reserved spring onion oil to the cooking water when you add the noodles. Drain noodles, reserving 120ml cooking liquid, and return to pot. Add 120ml spring onion oil and toss to coat. Add soy paste and toss to combine. Add soy sauce and toss again, adding cooking liquid as needed to loosen sauce.

Transfer noodles to a bowl or platter and top with three-fourths of crispy spring onions. Serve with remaining spring onions in a small bowl alongside.

Do Ahead: Spring onions can be fried 1 day ahead. Keep spring onion oil chilled; store spring onions between layers of paper towels in an airtight container at room temperature.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

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UK recipe editors

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UK recipe editors

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 28 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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