This salmon gratin is Japanese style because of using soy milk and miso. There are two layers of white sauce with salmon and spinach. Between them, there are sliced potatoes. I substitute wheat flour with a little rice flour. The gratin is healthy and hearty meal for dinner.
![](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-1-510x286.jpg)
Boil the spinach (You can check the step of it from the ingredients, and show the steps 1-14), and cut it into 3-4cm pieces.
![](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-2-510x286.jpg)
Cut the onion into 5mm slices.
![](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-3-510x286.jpg)
Skin the potato, and cut it into 5mm slices.
![salmon-gratin-with-spinach-step-4](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-4-510x286.jpg)
Get rid of the bones of the salmon, and cut into small bite-size pieces. Season the salmon with 1 pinch of salt and a little of white pepper (not included in recipe), and leave it for 10 Minutes. Wipe off the moisture from the surfaces.
![salmon-gratin-with-spinach-step-5](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-5-510x286.jpg)
Put 1000g water and 10g sea salt. Then add the potatoes. When it comes to a boil, turn the heat to low and cook for 6 Minutes.
![salmon-gratin-with-spinach-step-6](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-6-510x286.jpg)
Put the butter to a frying pan. Sauté the salmons. Start to sauté the skin of them until they are crispy on medium-low heat. It takes about 7-8 minutes.
![salmon-gratin-with-spinach-step-7](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-7-510x286.jpg)
When the both sides of the salmon is golden brown, and let it cook till the salmon is cooked through. Remove them from the pan to a plate. Cover it with a plastic wrap to prevent it from drying out.
![salmon-gratin-with-spinach-step-8](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-8-510x286.jpg)
Wipe off the frying pan. Put the olive oil, and sauté the onion with a little of salt on low heat until translucent. Don't burn it because white sauce will be brown.
![salmon-gratin-with-spinach-step-9](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-9-510x286.jpg)
Add the rice flour, and stir fry until they are good combined.
![salmon-gratin-with-spinach-step-10](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-10-510x286.jpg)
Divide the soy milk in three, and simmer it on medium-low until it turns thick. It takes about around 5 Minutes.
![salmon-gratin-with-spinach-step-11](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-11-510x286.jpg)
Season sea salt, miso and some freshly ground black pepper. Simmer it for low heat for about 2 Minutes. When you slide your spatula on the pan, and the sauce is not returned easily, it's done.
![salmon-gratin-with-spinach-step-12](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-12-510x286.jpg)
Preheat the oven to 250 degrees. Put half of the salmon and boiled spinach to 2 individual gratin dishes. Then add half of the stew.
![salmon-gratin-with-spinach-step-13](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-13-510x286.jpg)
Place the whole boiled potato in each dish.
![salmon-gratin-with-spinach-step-14](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-14-510x286.jpg)
Put the rest of the salmon and boiled spinach, and add the rest of the stew. Then sprinkle some freshly ground black pepper, and
![salmon-gratin-with-spinach-step-15](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-15-510x286.jpg)
Add the shredded cheese on top at the end.
Ingredients
Directions
![](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-1-510x286.jpg)
Boil the spinach (You can check the step of it from the ingredients, and show the steps 1-14), and cut it into 3-4cm pieces.
![](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-2-510x286.jpg)
Cut the onion into 5mm slices.
![](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-3-510x286.jpg)
Skin the potato, and cut it into 5mm slices.
![salmon-gratin-with-spinach-step-4](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-4-510x286.jpg)
Get rid of the bones of the salmon, and cut into small bite-size pieces. Season the salmon with 1 pinch of salt and a little of white pepper (not included in recipe), and leave it for 10 Minutes. Wipe off the moisture from the surfaces.
![salmon-gratin-with-spinach-step-5](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-5-510x286.jpg)
Put 1000g water and 10g sea salt. Then add the potatoes. When it comes to a boil, turn the heat to low and cook for 6 Minutes.
![salmon-gratin-with-spinach-step-6](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-6-510x286.jpg)
Put the butter to a frying pan. Sauté the salmons. Start to sauté the skin of them until they are crispy on medium-low heat. It takes about 7-8 minutes.
![salmon-gratin-with-spinach-step-7](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-7-510x286.jpg)
When the both sides of the salmon is golden brown, and let it cook till the salmon is cooked through. Remove them from the pan to a plate. Cover it with a plastic wrap to prevent it from drying out.
![salmon-gratin-with-spinach-step-8](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-8-510x286.jpg)
Wipe off the frying pan. Put the olive oil, and sauté the onion with a little of salt on low heat until translucent. Don't burn it because white sauce will be brown.
![salmon-gratin-with-spinach-step-9](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-9-510x286.jpg)
Add the rice flour, and stir fry until they are good combined.
![salmon-gratin-with-spinach-step-10](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-10-510x286.jpg)
Divide the soy milk in three, and simmer it on medium-low until it turns thick. It takes about around 5 Minutes.
![salmon-gratin-with-spinach-step-11](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-11-510x286.jpg)
Season sea salt, miso and some freshly ground black pepper. Simmer it for low heat for about 2 Minutes. When you slide your spatula on the pan, and the sauce is not returned easily, it's done.
![salmon-gratin-with-spinach-step-12](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-12-510x286.jpg)
Preheat the oven to 250 degrees. Put half of the salmon and boiled spinach to 2 individual gratin dishes. Then add half of the stew.
![salmon-gratin-with-spinach-step-13](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-13-510x286.jpg)
Place the whole boiled potato in each dish.
![salmon-gratin-with-spinach-step-14](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-14-510x286.jpg)
Put the rest of the salmon and boiled spinach, and add the rest of the stew. Then sprinkle some freshly ground black pepper, and
![salmon-gratin-with-spinach-step-15](https://ayana-gohan.com/wp-content/uploads/salmon-gratin-with-spinach-step-15-510x286.jpg)
Add the shredded cheese on top at the end.
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