Sopa de Cebolla

onion soup

Most people associate onion soup with France, but in reality it has been around since the time of the Romans. Because of it’s cheap ingredients, onion soup has always been the food of the poor. The modern French version is said to come from les Halles in Paris, which was once a huge market at the heart of the city, this was sadly demolished in 1971, when it moved to Rungis dans le Banlieue near Orly Airport.


But enough of French onion soup, this is a recipe for the Spanish version, made with pimentón de la Vera, to keep the cold out and grow hairs on your chest!

Receta de Sopa de Cebolla (serves 3)

2 large onions (sliced in rings)
1 head of garlic (finely chopped)
1 stick celery (chopped)
1 large carrot (chopped)
1 pimiento rojo (chopped)
1 pint of home made chicken stock
1 glass of red wine
a splash sherry vinegar
1 teaspoon pimentón de la Vera dulce
1/2 teaspoon pimentón de la Vera picante
2 bay leaves
1/2 teaspoon thyme
a level dessertspoon of flour
a large squirt of anchovy paste
olive oil as required (if the onions start to look dry)
sea salt and cracked black pepper to taste
grated Manchego cheese (to cover the croutons)

sliced onion

Slice two large onions (Spanish if you can get them) and cook them slowly in lots of olive oil.

onion caramelising

Start with half a cup of oil and add more if the pan starts to look dry. Stir often or they will burn!

caramelised onion

The idea is not so much to brown the onions, but to sofregir (underfry or poach) them. This is a particular Catalan and Spanish cooking method to bring out the sweetness and produce soft sticky onions that are almost falling apart. With two sliced onions, this took about an hour, but there is a heat diffuser under my terracotta pot, which slows the cooking down and heats the pan evenly – it’s not necessary to stir constantly with this and all the other food prep can be done just so long as the onions get stirred every 5 minutes or so.


While the onions are cooking, burn the outside of a red pepper – on the hob, under the grill (broiler) or on a barbecue. When black all over, put the pepper into a paper bag or plastic container, so that it sweats.

pimiento rojo

After 10 minutes or so, the blackened skin will peel off easily to reveal a sweet and smokey pimiento rojo beneath. Remove the stalk and seeds, then chop.


When the onions are soft and sticky add the celery, carrot and garlic.

roasted red pepper

Next add the roasted red pepper,


followed by a dessertspoon of chopped parsley.


Sprinkle on the pimentón, thyme and flour – mix to create a roux.


Stir in the red wine, sherry vinegar, stock, anchovy paste and bay leaves. Check the seasoning, cover with a lid or foil and remove to a preheated oven at 180º C for 90 – 120 minutes.


In the meantime, slice some stale bread, rub it with olive oil on both side and bake it in the oven until golden brown. When the soup’s ready put it into individual oven proof bowls, grate some Manchego cheese onto the croutons and place one in each bowl. Put the soup and croutons under the grill for a few minutes until the cheese has melted. Serve immediately (though one of the fantastic things about croutons, is that they maintain their crunch for quite some time in a bowl of soup) with a touch more parsley for decoration.

sopa de cebolla

The flavour is predominantly of onion (as you would expect) with sweet pimiento rojo and a reassuring warm smokey kick from the pimentón. The grated Manchego on top of the croutons adds a perfect umami (savoury) finish. I recommend that you drink a fino sherry with the sopa de cebolla and in particular, Fino Cebolla from Bodegas El Monte.

About Mad Dog
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12 Responses to Sopa de Cebolla

  1. Eha says:

    *laughing* I most definitely would hate hairs on my chest and the weather is slowly warming up but the Spanish version of a beloved soup is welcome all year around ! As is the history and sociology lesson ! Both your ‘underfrying’ . and smaller amount of onions used are interesting and shall be tried . . . .so trust that as the weather cools and that virus is far from friendly life will keep its smiles . . . . . .

  2. Ruth says:

    Everything you make always looks delicious! and I know that it tastes delicious too. Only wish I could eat it with you. Ruth in Pittsburgh

  3. TammyRenea says:

    Definitely a whole lot of Spanish in that onion soup!

  4. Ron says:

    Mad Dog, you’ve brought us yet another fantastic soup with a rich history. We love onion soup and roasted red peppers, so this sounds wonderful to have on a cold fall or winter day. We have Pimenton de La Vera, in the spice rack. So, I just need to get more onions and peppers and I’m good to go. Have you ever had Torres Chips Pimentón De La Vera? We just tried them for the first time last week and they were found to be very additive and require coupious amounts of cold beer…

    • Mad Dog says:

      Thanks Ron – it’s perfect for the colder nights. If you like those chips, I think you’ll love Torres Trufa Negra (black truffle) – són molt catalans!

  5. Karen says:

    Onion soup is a favorite and I’ve tried versions in many different countries but I don’t think I’ve had a Spanish one like yours. It sounds like a good one but I’ll have to be careful not to eat too much…if your prediction about growing hairs on your chest is accurate. 😂

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