You can't please everyone, especially if you're doing very radical things at the vanguard of cooking. That's life; it's a polemic I've lived with since I started cooking.

In my early days, I copied the great French chefs, like most chefs do. Copying is not bad. Copying and not recognizing that you are copying is bad. For me, when I go to a restaurant and am served a dish influenced by something we created at elBulli, if it's well done, it makes me extremely happy.

There's a little treat I like a lot called Bollycao. It's like a brioche with chocolate inside, but industrial.

When people think science and cooking, they have no idea that it's not correctly expressed. We're actually applying the scientific method. People think chemistry and physics are science, but the scientific method is something else.... It's the science that the world of cooking generates: science of butter; science of the croissant.

Throughout the history of el Bulli, there have been many changes in its organisation or philosophy. This is another one of those moments. There will be risk, and freedom, and creativity. But there won't be opening hours, or reservations, or routines.

We need to think about what cooking is, what context it takes place in and what its relationship to the world of art is. If there were criticisms of my presence at Documenta, that's a good thing because it means we were doing something new. Your mission in creating something artistic is to produce something new and polemical.

In an avant-garde cooking restaurant, it's the experience that's the difference.