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April 30, 2008

Foaming at the mouth, Part II: el Bulli's tortilla de patatas Marc Singla foam

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For the longest time, I was convinced that only the French know how to make a good omelette.  Rachel and I had eaten our share of Spanish tortillas and Italian frittatas, and found them wanting: thick rounds of leaden, overcooked eggs with a consistency more reminiscent of a custard forgotten in the oven than an old world culinary classic.  The French insist an omelette should be thin, light, and cooked just long enough to firm one side while leaving the other creamy.

The French are right.

Then we visited Cal Pep, one of Barcelona's most famous tapas joints, and discovered a tortilla that puts omelettes to shame.  There, cooks scoop a mixture of potato, chorizo, onion and golden, creamy eggs into sizzling hot, high-sided small pans. One flip and a minute or two later, they slide a thick, lightly caramelized disc about the size of a large hamburger patty onto a plate, slather the top with allioli, a garlicky mayonnaise better known by its French name, aïoli, and await the delighted squeals of ravenous customers.

What makes this tortilla so special is that, unlike its Iberian and Italian cousins, it offers that magical mix of cooked and creamy egg that makes a French omelette superior.  Cut open Cal Pep's tortilla, and, underneath the lightly caramelized crust, lies a core of warm, not-quite-set egg.  Allioli complements the unctuousness of the interior while nuggets of spicy chorizo and potato add body and flavour.  It's enough to make me forget France forever.

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The tortilla's iconic stature in Spanish gastronomy means that Ferran Adria can't resist riffing on it,  even if he's got to crib from another chef to do it.  El Bulli's evolution of the hot 'tortilla de patatas Marc Singla' foam from el Bulli: 1998-2002 deliciously deconstructs the standard dish.  Raw yolks and a barely cooked sabayon mean the egg portion of this tortilla is a golden syrup that flows on the palate, and Adria opts for a tangle of caramelized onions for their complex savoury-sweet bite.

Yet it's the potatoes that grab your attention.  Gone are the chunks of spud, replaced instead by an almost overwhelmingly rich foam made by boiling potatoes, enriching them with cream and olive oil, then blending and pouring the mixture into an iSi Gourmet Whip charged with nitrous oxide.  The Gourmet Whip is unique because it can be heated, so after spooning caramelized onion into the bottom of a martini glass and gilding it with some raw egg yolk and sabayon, the dish is crowned by a layer of piping hot potato.

Despite my misgivings -- blending potatoes is normally a recipe for glue, not haute cuisine -- the foam is spectacular.  It has a noticeably buttery taste even though it has no butter, and the texture is, not unexpectedly, light but still substantive enough to form the backbone of the dish.  My only complaint, and here, yes, I'm trying to have it both ways, is that I miss some of the complexity of flavour and texture that comes from the caramelized exterior of Cal Pep's tortilla.

I've tried to reproduce Cal Pep's tortilla at home, but I'm not quite there yet.  Problem number one is that my non-existent Catalan makes translating the recipe difficult (someone help me, please).  Problem number two is that I have yet to find a pan suitable for the job.  My results so far have been good but not stellar: a respectable crust, but a slightly overcooked centre.  No matter, I can always turn to el Bulli's version, or, failing that, Rachel assures me I prepare a mean French omelette.

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Comments

Jens Hørup Jensen

Well, I've had a spanish friend to translate it to Danish, so here's a translation of a translation of the recipr from Cal Pep's:

1 egg
1 potato
2 tbsp. chopped onion
1 slice of strong chorizo
2 tbsp. allioli
olive oil
salt

Slice the potato and fry on a pan at medium heat. My experience says that the potato is done right before it starts to color. Put the potato aside. Onion fried until they are clear. Put the onion aside.
Fry the chorizo short on both side on a hot pan with a little oil. The chorizo must not be fried completely done. Mix the potato and the fried onions with the chorizo on the pan.
Whisk the egg heavily (makes the omelette more light and airy) and pour the mixture from the pan into the bowl. Fry the mixture immediately on the pan so that the omelet gets color on the outside and still is a little soft inside. Move the omelet to a serving dish and spread allioli on the top before it's served.

Hope this makes sense to you :-) My cooking english is a little rusty!

Matthew Kayahara

Looks good! I have yet to try making a hot foam, though I've made a few cold ones. To get that complexity of caramelized potato flavour, what about hitting the foam with a blowtorch? Or would that just make it collapse?

Niall Harbison

I have just stumbled upon your blog. I love the clean design and fantastic photos. I am a blogger myself and always thought that design was key and you have certainly captured that! There are so many food blogs out there these days and being different to all the others is key. I have just started www.ifoods.tv which is a website for chefs, foodies and food bloggers to hand out, share recipes, photos and videos. When i was blogging I always thought i should be getting more traffic as my blog was getting lost in the masses of stuff out there so my new site is aimed at giving food bloggers and chefs a bigger platform! Hope you enjoy it and keep up the good writing and design here! I have now bookmarked you so will be regular reader, Cheers!

Nina

I found myself salivating over this post. El Bulli is on my list of things to do before I am fifty...time is running out by the way. I love your site.

sandra

Sometimes I forgot the right way... But other times I got it!
Dear Rob I love your post!
Sorry, for this strange comment, but I drink a very good wine and I'm so happy!
:)

Anna McAnthony

This sounds not only very good, but quite unusual. I think it would take me a lot of practice to "get it right", but I think it would certainly be worth the effort.

Rob Hyndman

Love this post. We got back from Barcelona recently and ate at Cal Pep twice. The tortilla was unforgettable - my wife is Argentinian, of Spanish descent, so the family has a deep history in tortilla perfection. Even so, we were dumbfounded when we tried Cal Pep's.

My favourite dish there was their clams, though. Sublime, unforgettable.

Thanks for the post!

jordan 23

I'm not on this earth by opportunity. I'm correct right here to obtain a reason and that goal could be to produce proper right into a huge batch, to not dissove to a hemp of sand. Do you think about therefore?

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