Seafood
Vegan alternative to tuna: the best substitutes
Everything you need to replace tuna 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: Mashed chickpeas + nori + vegan mayo (sandwiches and jacket potatoes).
- Ratio: 1 can chickpeas ≈ 1 can tuna.
- Pro tip: Nori or dulse flakes are non-negotiable — they supply the sea flavour the chickpeas can't.
- 3 vegan alternatives to compare for tuna.
Why tuna isn't vegan
Wild-caught fish.
Best vegan substitutes
| Substitute | Best for |
|---|---|
| Mashed chickpeas + nori + vegan mayo | Sandwiches and jacket potatoes |
| Marinated watermelon (raw-style) | Poke bowls and sushi |
| Canned vegan tuna (soy or pea protein) | Convenience |
How to substitute tuna, step by step
- 1
Pick the right substitute for the job
For most recipes use Mashed chickpeas + nori + vegan mayo — sandwiches and jacket potatoes. If you need a different texture, Marinated watermelon (raw-style) works for poke bowls and sushi.
- 2
Measure using the correct ratio
1 can chickpeas ≈ 1 can tuna. Weigh rather than eyeball it — small errors show up much faster when replacing tuna.
- 3
Adjust the method
Nori or dulse flakes are non-negotiable — they supply the sea flavour the chickpeas can't.
- 4
Taste and correct
Plant swaps are usually a little less salty and less rich than tuna. 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 tuna by weight — check the ratio above first.
- Using a sweetened or flavoured version in a savoury recipe.
- Ignoring the method change: Nori or dulse flakes are non-negotiable — they supply the sea flavour the chickpeas can't.
- 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 can chickpeas ≈ 1 can tuna.
Pro tip
Nori or dulse flakes are non-negotiable — they supply the sea flavour the chickpeas can't.
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 tuna?
- Mashed chickpeas + nori + vegan mayo is the closest all-round swap — sandwiches and jacket potatoes. 1 can chickpeas ≈ 1 can tuna.
- Why isn't tuna vegan?
- Wild-caught fish.
- How much do I use instead of tuna?
- 1 can chickpeas ≈ 1 can tuna.
- Any tips for getting it right?
- Nori or dulse flakes are non-negotiable — they supply the sea flavour the chickpeas can't.
Not sure if a product contains tuna?
Scan any barcode with VeggieOS for an instant vegan verdict and better swaps — 100% free, no paid plans.
Try VeggieOS free — no paid plans