Stegt Svinelever med Løg

Ingredients

Equipment Needed

• •Heavy frying pan, 28cm or larger
• •Shallow dish for soaking the liver
• •Wooden spoon or spatula

Instructions

1. 1

   Soak the liver

   Place the liver slices in a shallow dish and pour the milk over them. Let them sit for at least thirty minutes at room temperature, or up to two hours in the fridge. The milk draws out the bitterness that lives in liver and softens the mineral edge. This is the step most people skip, and it's why most people say they don't like liver. Don't skip it. When you're ready, lift the slices out and pat them very dry with kitchen paper. Wet liver will not brown. It will steam and turn grey, and the dish will be lost before it begins.

   If you see any veins or tough membranes on the liver, trim them away with a sharp knife before soaking. They turn rubbery when cooked and nobody wants to find one.
2. 2

   Cook the onions slowly

   Melt the 40g of butter in a heavy frying pan over a low to medium heat. Add all the sliced onions, spread them out, and give them a pinch of salt. The salt draws out moisture and starts the softening. Now leave them alone. Stir every few minutes, but don't rush them. You want twenty minutes at least, probably closer to twenty-five. The onions should collapse into soft, golden, faintly sweet tangles. Not browned and crisp, not caramelized to dark amber. Just soft and gold. This is the foundation of the whole dish, and it cannot be hurried. When they're ready, scrape them out onto a plate and set them aside. Don't wash the pan.

   If the onions start to catch and darken too fast, add a tablespoon of water and lower the heat. The water buys you time. It evaporates and the onions continue softening instead of burning.
3. 3

   Flour and season the liver

   Season the dry liver slices generously on both sides with salt and pepper. Spread the flour on a plate and press each slice into it lightly, turning to coat both sides. Shake off the excess. The flour does two things: it creates the thin crust that gives the liver its golden surface, and it thickens the pan juices into a sauce later. A heavy coating makes the crust thick and pasty. You want a whisper, not a blanket.

4. 4

   Fry the liver

   Return the pan to a high heat and add the remaining 20g of butter and the tablespoon of oil. When the butter foams and the foam just begins to subside, lay the liver slices in without crowding. You need space between each piece, or the temperature drops and the liver stews instead of searing. Fry for two minutes on the first side. Don't move them. You'll see the edges change color, turning from raw purple-brown to a warm grey-pink climbing up the sides. Flip and fry for one to one and a half minutes more. The liver should be golden on the outside and still slightly pink at the centre. Press a slice gently with your finger: if it gives softly and springs back, it's done. If it's firm and hard, you've gone too far. Overcooked liver turns dry and chalky. That's the line, and it matters.

   If you're nervous about doneness, cut into one piece. Slightly pink in the centre is perfect. Grey all through means the texture will be grainy. Better to pull it a moment early than a moment late.
5. 5

   Make the pan sauce

   Transfer the liver to a warm plate and tent it loosely with foil. The pan will be dark with fond, the sticky brown residue where the flavor lives. Pour in the stock and the apple cider vinegar and scrape the bottom of the pan with a wooden spoon, loosening everything. Let it bubble for one to two minutes until it reduces by about half and coats the back of a spoon. The vinegar cuts through the richness and gives the sauce a sharp backbone that the liver needs. Taste it. Adjust the salt. Return the onions to the pan and stir them through the sauce to warm them.

6. 6

   Serve at the table

   Lay the liver slices on warm plates and pile the soft, sauce-coated onions on top and around them. Pour any remaining pan sauce over everything. Serve with plain boiled potatoes, a thick slice of dark rugbrod, and pickled beetroot if you have it. The beetroot's sweetness and acidity work against the richness of the liver in the same way that pickles balance a heavy meal. This is a dish you eat simply and completely, with everything on the plate talking to everything else. Tak for mad.

Chef Tips

• •Buy your liver from a butcher who can slice it fresh. Pre-packaged liver from the supermarket works, but it's often cut too thick and has been sitting longer. If you have a choice, thinner slices, about 1cm, cook faster and stay tender more easily.
• •The milk soak is not optional. Thirty minutes is the minimum. The difference between soaked and unsoaked liver is the difference between something you want to eat and something you endure. The milk pulls out the bitter compounds that give liver its bad reputation.
• •Don't crowd the pan when frying. If your pan won't fit all the slices with space between them, work in two batches. Crowding drops the temperature and the liver steams instead of searing. You need that crust.
• •A glass of cold Danish pilsner is the right thing to drink alongside this. The bitterness of the beer meets the mineral richness of the liver, and they understand each other.

Advance Preparation

• •The onions can be cooked up to a day ahead and stored in the fridge. Warm them through in the pan sauce when the liver is done.
• •Soak the liver in milk in the morning and leave it in the fridge all day. It only gets better with a longer soak, up to eight hours.
• •This dish does not reheat well. Liver toughens as it cools and toughens further when reheated. Cook it fresh and eat it immediately.

Frequently Asked Questions

Nutrition Information

1 serving (about 230g)