They restored the more expensive ingredients to the Big Mac sauce and changed the salt-and-pepper seasoning in the beef patties.

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There are plenty of different ingredients you can put in your bowl to personalize your creation: Soy sauce, sesame oil or paste, chili, garlic, coriander, vinegar and Chinese barbecue sauce (see inset, above) are some choices.

NPR: Friends, Family and a Feast: A Hot Pot How-To

Opened in 1986, El Celler is known for dishes that blend innovative cooking techniques with traditional ingredients, such as lobster parmentier with black trumpets and Iberian suckling pig with pepper sauce and garlic and quince terrine.

WSJ: Spain's El Celler de Can Roca world's No. 1 eatery