Seafood
Vegan alternative to prawns: the best substitutes
Everything you need to replace prawns with a plant-based substitute — which one to use, the exact ratio, and the mistakes that ruin the result.
Short answer
Key takeaways
- Best all-round swap: King oyster mushroom stems, scored and seared (garlic prawns, paella).
- Ratio: 1:1 by piece.
- Pro tip: Score the mushroom in a cross-hatch and marinate with old bay, garlic and a pinch of kelp powder.
- 3 vegan alternatives to compare for prawns.
Why prawns isn't vegan
Farmed or trawled shellfish.
Best vegan substitutes
| Substitute | Best for |
|---|---|
| King oyster mushroom stems, scored and seared | Garlic prawns, paella |
| Konjac vegan prawns | Closest bite |
| Hearts of palm | Cold salads |
How to substitute prawns, step by step
- 1
Pick the right substitute for the job
For most recipes use King oyster mushroom stems, scored and seared — garlic prawns, paella. If you need a different texture, Konjac vegan prawns works for closest bite.
- 2
Measure using the correct ratio
1:1 by piece. Weigh rather than eyeball it — small errors show up much faster when replacing prawns.
- 3
Adjust the method
Score the mushroom in a cross-hatch and marinate with old bay, garlic and a pinch of kelp powder.
- 4
Taste and correct
Plant swaps are usually a little less salty and less rich than prawns. Season at the end and add acid (lemon, vinegar) or umami (miso, nutritional yeast) if the dish tastes flat.
Mistakes to avoid
- Swapping by volume when the recipe measures prawns by weight — check the ratio above first.
- Using a sweetened or flavoured version in a savoury recipe.
- Ignoring the method change: Score the mushroom in a cross-hatch and marinate with old bay, garlic and a pinch of kelp powder.
- Assuming every packaged product labelled "plant-based" is vegan — some still contain milk powder, honey or egg. Scan the barcode to be sure.
Conversion ratio
1:1 by piece.
Pro tip
Score the mushroom in a cross-hatch and marinate with old bay, garlic and a pinch of kelp powder.
Replace the job, not just the ingredient
An egg can bind a burger, enrich a cake or create the foam in a meringue. Those jobs need different substitutes: ground flaxseed can help with binding, while aquafaba is useful for whipping.
Review the rewritten method as well as the ingredient list. Changing the amount of liquid, the cooking temperature or the resting time can matter as much as the substitute itself.
- A practical example
- For a creamy pasta, try unsweetened plant cream or blended silken tofu; add acidity and seasoning to taste rather than relying on a cheese substitute alone.
- What to keep in mind
- Substitutions can change allergens, texture and nutrition. Test a small batch before making a dish for guests.
Frequently asked questions
- What is the best vegan alternative to prawns?
- King oyster mushroom stems, scored and seared is the closest all-round swap — garlic prawns, paella. 1:1 by piece.
- Why isn't prawns vegan?
- Farmed or trawled shellfish.
- How much do I use instead of prawns?
- 1:1 by piece.
- Any tips for getting it right?
- Score the mushroom in a cross-hatch and marinate with old bay, garlic and a pinch of kelp powder.
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