The basic elements of a gastronomic calçotada Valls are spring onions with sauce specially created to accompany the lamb and sausage (or "sausage") on the grill, and desserts (oranges, Catalan cream and pastries) . Drinks are genuinely accompany food wine and cava. The ritual begins on calçotada all the delicate operation of preparing the "spring onions" that involves cutting green leaves to a certain extent and roots. After this operation the "spring onions" are placed on the grid under which the fire alive and well distributed, has to do its job. During the cooking process you have to remove the grill fire two or three times to proceed to reverse the "spring onions" one by one. Once cooked, ie, when the tip is already soft and are completely black on the outside, are kept wrapped in newspaper to keep warm type paper.

As should be eaten hot, the "onions" are presented in the table still wrapped and placed in a hollow tile. The diners are prepared to enjoy, each with its corresponding bib not stain with full tub of sauce and a slice of bread that serves as accompaniment while also collecting the sauce. Traditionally, the "eat onions with diners rights, and the amount will depend on the experience and appetite, but food is running between 25 and 30 onions per person.

The coals are used for cooking meat, sausage and possibly sausage, artichokes ... also run throughout the meal from hand to hand jugs filled with wine, preferably black. The gastronomic festival ends with the traditional orange and merengue, which in recent years have been added to the cream and cakes to the allegorical "calçot"

To produce a good sauce calçotada, each family has its own secret, the result of an investigation that has itself been passed from generation to generation. However, the basic ingredients are for 4 people: 100 grams of roasted almonds, 30 grams of roasted hazelnuts, roasted red 4 or 5 tomatoes, 1 head of roasted garlic, 80 cl of olive oil, 1 / 2 cups vinegar, 1 dry pepper, a pinch of paprika, parsley and salt, all very well crushed in a mortar or a blender.