Sardine Fishcakes With Garlic Aioli & Green Salad

While sardines are impressively nutritious, most people don’t like their stronger fish taste, especially when they come in a tin. In today’s recipe, I will show you how to make Canned Sardine Fishcakes, which is one of my favourite ways to enjoy this fish. This recipe is gluten-free, Whole30 and Paleo-friendly.

Canned Sardine Fishcakes With Garlic Aioli & Green Salad

Ah, sardines! Just like with the nutritious liver, you know you should eat more of them but it’s hard to enjoy this fish compared to a more subtle tasting salmon or cod. Personally, I don’t mind the strong flavour but I do have a few tricks up my sleeve for how to eat them, such as in my forshmak sardine dip salad or paired with a citrus zucchini salad.

Today’s fishcakes are another example of how you could potentially enjoy canned sardines specifically. I have to point out that fresh sardines, grilled and sprinkled with salt and parsley are TOTALLy different to their tinned brothers and sisters. So, the recipe here is for tinned fish as that’s the one most people avoid due to the stronger flavour (and all those little bones).

Benefits Of Sardines

Before you turn your nose on this recipe, consider (just for a second) just how nutrient-dense sardines are. They are packed with vitamins and minerals such as B12, zinc, selenium and calcium,  and are super high in omega-3 fatty acids and protein.

Plus, they are super sustainable and low in mercury compared to bigger fish. They are some of the best foods to eat to support your mitochondrial health (your cells), to fight inflammation, and to support bone density.

Sardine fishcakes with garlic aioli and green salad

How To Make Sardine Fishcakes

These sardine fishcakes are made with white potato, onions and carrots and just a touch of paleo-friendly flour such as cassava or tapioca. There is an egg inside as well, but you could potentially get away without it.

I personally eat white potato and it’s widely eaten within the paleo and real food community (it’s Whole30 approved!), but you are welcome to use sweet potato instead. I often make fishcakes with sweet potatoes.

White potato is full of starch (the good kind, actually) and gives these patties a lovely, soft texture and helps to cut down that fishy flavour. Another thing that lifts these fishcakes to a pleasant sphere is the garlic aioli and lemony salad served on the side.

You can easily whip up both while the fishcakes are frying. All in all, it’s a very nutritious dinner or lunch! I sure hope you give these guys a go and maybe…just maybe…you too can start to enjoy sardines.

Making fishcakes with sardines and potatoes
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Sardine fishcakes with garlic aioli and green salad

Sardine Fishcakes With Garlic Aioli & Green Salad

  • Author: Irena Macri | Eat Drink Paleo
  • Prep Time: 20 mins
  • Cook Time: 25 mins
  • Total Time: 45 mins
  • Yield: 4 1x


  • 4 medium white potatoes, peeled and cut into large cubes
  • 1 carrot, grated
  • 1/2 red or white onion, finely diced
  • 1 tablespoon olive oil
  • 2 cans of sardines in spring water (about 200 g / 7 oz)
  • Zest of 1/2 lemon
  • 1 teaspoon Dijon mustard
  • 3 pickled jalapenos, finely diced (can be omitted or you can add a teaspoon of chilli sauce)
  • 1 teaspoon salt
  • Generous pinch pepper
  • 1 egg
  • 2 tablespoons cassava or tapioca flour (or 1 tbsp coconut flour)
  • Oil for cooking (macadamia, olive oil, coconut oil, ghee)

For aioli

  • 3 tablespoons mayonnaise
  • 1 garlic clove, grated
  • 1 tablespoon lemon juice

For the salad

  • 1 head of gem lettuce, diced
  • 1 large cucumber, diced
  • Juice of 1/2 lemon
  • 1 tablespoon olive oil
  • Salt and pepper to taste


  1. Place potato in a pot and cover with cold water, add half a teaspoon of salt. Bring to a boil, then cook for 15 minutes until soft. Strain and transfer the cooked potato to a mixing bowl, mash it roughly and allow to cool down.
  2. In the meantime, saute the onion and carrots in a tablespoon of olive oil for 2 minutes, until softened. Transfer to the potatoes and cool all vegetables for 15-20 minutes.
  3. Add the rest of the fishcake ingredients, except for the flour, and mash together really well. Finally, add the flour and mix through.
  4. Shape the mixture into small patties and arrange on a plate or a tray. You can store these in the fridge overnight covered with some Clingfilm or you can cook them right away.
  5. Heat a few tablespoons of coconut oil or macadamia oil (or ghee) in a frying pan over medium-high heat. Add the fishcakes and cook for 4-5 minutes each side, until golden brown crust forms.
  6. While the fishcakes are cooking, combine the aioli ingredients in a bowl and mix well. Toss the salad with the lemon juice, olive oil, salt and pepper and set aside.
  7. Serve the fishcakes with a dollop of aioli and salad on the side. Enjoy!


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Sardine fishcakes with garlic aioli and green salad

Irena Macri
By Irena Macri

About the author: Hi, I’m Irena Macri. Here at Cooked & Loved you will find simple, delicious recipes worth sharing. From new dishes to old-time favourites with a twist, this is the food I cook and love. More about me here.

PS. Some posts contain affiliate links, which means I receive a small commission for purchases made through these links.

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    1. You should be able to freeze them for 2-3 months. Reheat in the oven from frozen or defrost in the fridge overnight and then reheat in the oven or pan-fry to get that crispiness back.

  1. This recipe is amazing, Irene! You have never steered me wrong!
    One thing I would advise is to go ahead and omit the egg if you are only making half the recipe. I found the egg to make the batch somewhat runny, but I’m sure it’s just fine in the full batch.

  2. Made these today, delicious. It is a good way to get people to eat some vegetables too. Thank you for the recipe!

  3. It says 4 medium potatoes, about how many cups does that end up being? And can we use leftover mashed potatoes? Thank you.

    1. I’d say about 2.5-3 cups diced potatoes. Yes, you can use leftover mashed potatoes, about 2 cups. To be honest, it doesn’t have to be super precise. Some days I make these with less potato and more fish, other days it’s more potatoes. Still works.

  4. I haven’t tried these yet but I probably will. I would add capers, and if I did that would possibly leave out the mustard.

    1. Yes, absolutely. Mustard is optional, just gives it a little kick and acidity. Capers would be a great addition. I sometimes chop them up and add them to the aioli/sauce, but they can go inside the patties as well.

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