How to make Jansson’s Frestelse

Christmas is less than 10 weeks away.

We’re in Christmas prep mode in our house. (Yeah, no. Mainly me. I am in prep mode. Kids and husband are blissfully unaware)

I’ve bought most of the presents, planned the advent calendar, what decorations to make and use, drinks and food menus and the colour scheme on the tree. 

With age I’ve come to realise that I may just be a teeny tiny bit OCD when it comes to Christmas and especially when it comes to decorating the tree… 

But I digress. 

So you may have noticed that I like food. 

I like discussing food, watching programmes of people like Nigella and Gordon making it, looking at pictures of food, food competition programmes, cooking myself but also eating it. 

For me, food plays a major role in making Christmas magical. 

And for a Swede living in the UK, Swedish Christmas food become extra important. It’s nostalgia, cosy, familiar… it’s Yule. 

I order my Swedish Christmas food from Totally Swedish and the Swedish Shop on Ocado online every year. 

There has to be a Christmas Ham, Julmust (a special soft drink), meatballs, prinskorv (mini sausages), my Swedish Sticky Ribs and Jansson.

Heck. I’d even go so far as to say I’d try making ”Dopp i grytan”, just to feel extra Christmassy. 

(Even though, like Lena in Svensson, Svensson I know that no one would eat from the pot anyway) 

For those of you who haven’t tried it Janssson’s Frestelse is a traditional Swedish Potato Gratin dish. But tastier.

Since I want to avoid any disasters on the actual day, I trial the food in the weeks leading up to on Christmas Eve and Day. (The Swedes celebrate on the 24th – more on that in another post!).

This week I’ve made Janssson’s Frestelse and I’d like to share my recipe with you. 

Janssson’s frestelse is traditionally made of potatoes, onions, *pickled sprats, bread crumbs and cream. 

For my version, I’ve added some shallots as I think it really complements the dish.

You will need: 

  • 1 1/2 kg potatoes – the waxy kind (Maris Piper or King Edward)
  • 2 big yellow onions and 1 shallot onion
  • Proper butter (for frying and to dollop on top of gratin before cooking)”
  • Pinch of cinnamon
  • 1 tin sprats (à 100 g)
  • 4 dl double cream
  • 2 dl milk
  • Plenty of breadcrumbs to cover the dish (about 2 tbls)
  • Sugar (for caramelising the onions) 
  • Deep oven dish, smothered in butter
  • Pot to boil your double cream and milk 
  • Salt and Pepper to taste

Preheat oven to 160˚C. (fan assisted) 

Peel the onions, shallots and potatoes. Slice the onion thinly, chop the shallots very fine and fry them in the butter. Add the sugar to caramelise. Add a pinch of cinnamon.

Cut the potatoes into thin strips

Potato on a board
Sliced potato

Take out your sprats and lay them to one side. Take the juices and put into a bowl. You will mix in the sprat juices with the milk and cream later on. 

Now layer your onions, potatoes and sprat fillets in a deep dish – sort of like you would a lasagne. 

Start and end with a layer of potato. 

Milk and cream summering

Heat your milk and double creme on a gentle heat on your stove. Let it simmer for a minute then take away from the heat. Mix in the sprat juices. 

Pour the liquid over your potato and onion dish. Add the breadcrumbs over the top and add small knobs of butter on top. The butter will bring some extra crunch and tastiness to the dish. 

Bake in the lower part of your oven for about an 1 hour, 1 1/2. 

Janssons Frestelse

The potatoes should be soft, the milky cream should be reduced and the top a lovely light brow colour.

(If you find that your dish is getting too dark then put some foil on top to stop it from burning.)

Sprats

*if you’re not a fish fan, then you can leave this item out, but as the sprats and its juices gives the dish its saltiness you’d have to balance the dish well when seasoning 

Enjoy!