October 10, 2026

The 5 Commandments of Italian Cooking You Break Without Knowing

Name: Restaurante Rossini
Address: Pl. Reial, 13, Ciutat Vella, 08002 Barcelona, Barcelona, Cataluña, ES
Telephone: +34 933 43 58 09
Price range: €€€

Italian cuisine is one of the most popular in the world, but also one of the most misunderstood. In its global expansion, many traditional recipes have undergone mutations, shortcuts, and additions that would make any chef in Rome, Naples, or Bologna throw their hands up in despair. Far from being an unreasonable whim, the rules of Italian gastronomy respond to a very clear principle: absolute respect for the quality and natural flavor of the product. When a dish has exceptional ingredients, it does not need disguises or excesses.

Por Admin

6 min read · Restaurante Rossini

The 5 Commandments of Italian Cooking You Break Without Knowing — Restaurante Rossini · Plaça Reial, Barcelona

The five most common mistakes we make when preparing or ordering Italian food and the historical and culinary reasons why we should avoid them.

1. First Commandment: You shall not add cream to Carbonara sauce

This is undoubtedly the most widespread myth outside of Italy. The idea that a Carbonara sauce contains cream is a quick-cooking trick to achieve creaminess without mastering the egg technique.

Why it is a culinary mistake

The authentic Roman recipe does not require liquid dairy. The perfect creaminess is achieved through the emulsification of the egg yolk, aged cheese (Pecorino Romano or Parmigiano Reggiano), the melted fat from the cured meat (guanciale), and a spoonful of the pasta cooking water, rich in starch. Cream adds unnecessary heaviness that masks the flavor of the cheese and meat.

How to do it correctly

The secret lies in temperature control. By mixing the egg with the cheese off the heat and pouring the freshly drained pasta onto the warmed pan, the residual heat gently cooks the egg without curdling it, achieving a silky and light cream.

2. Second Commandment: You shall never add oil to the water when boiling pasta

A very common habit in households is to pour a splash of olive oil into the pot of boiling water before adding the pasta, under the belief that this will prevent it from sticking together.

Why it is a culinary mistake

Fluid physics teaches us that water and oil do not mix. The oil floats on the surface of the water and serves no purpose while the pasta cooks. However, when you drain the pasta, that layer of oil completely coats it, leaving a slippery and greasy film. What’s the result? The sauce you add later will not adhere to the pasta and will slide directly to the bottom of the plate.

How to do it correctly

To prevent the pasta from sticking, only three elements are needed: plenty of water (one liter for every 100 grams of pasta), a pot large enough for it to circulate freely, and gently stirring the pasta during the first two minutes of cooking.

3. Third Commandment: You shall not cut spaghetti or use a spoon to twirl it

Putting long pasta on a board to cut it with a knife before cooking, or chopping it directly on the plate, is considered in Italy a true sacrilege at the table. Similarly, using a spoon as a support to twirl spaghetti is a modern custom that has little to do with tradition.

Why it is a culinary mistake

The shape of the pasta is designed for a specific sensory experience. The length of spaghetti is meant to capture the exact amount of fluid sauce or emulsion with each fork twist. Cutting the pasta alters that proportion, destroys the texture, and ruins the dynamics of the bite.

How to do it correctly

You only need a fork. Hook two or three strands of pasta from the edge of the plate (never from the center) and gently twist the fork while lightly resting it on the bottom of the plate until you form a clean and compact bite.

4. Fourth Commandment: You shall not cover fish dishes with grated cheese

At many tables, there is a habit of automatically sprinkling grated cheese on any pasta dish. However, combining cheese with seafood recipes or pasta with shellfish is a strongly rooted taboo in Italian tradition.

Why it is a culinary mistake

Parmigiano or Pecorino cheese has an intense, salty, and very powerful umami flavor. When combined with delicate fish, shellfish, or clam-based sauces, the cheese completely nullifies the marine and fresh notes of the main ingredient.

How to do it correctly

In seafood recipes, juiciness and flavor enhancement are achieved through a good emulsion of extra virgin olive oil, garlic, fresh parsley, a touch of chili, and the juice released by the shellfish as they open in the pan.

5. Fifth Commandment: Pasta is not served white with sauce on top

Serving a plate of completely white pasta at the base and placing a spoonful of warmed sauce on top is a visually appealing presentation for photos, but a disaster from a culinary perspective.

Why it is a culinary mistake

When pasta cools in the air without being mixed, it dries out, sticks together, and loses its ability to absorb flavor. The sauce remains isolated on top, and the mouthfeel experience becomes uneven: bites loaded with sauce followed by bites of bland pasta.

How to do it correctly

The fundamental process is called mantecare. The pasta should be taken out of the water one minute before it is ready and transferred directly to the pan where the sauce is heating. Everything is sautéed together over high heat for 60 seconds, adding a ladle of the cooking water. This way, the pasta absorbs the sauce internally, creating a perfect and uniform union.

Respect for tradition in the heart of Barcelona

Understanding and applying these small details is what makes the difference between fast food and a true Italian gastronomic experience.

In the historic center of Barcelona, under the traditional arcades of Plaza Real, the restaurant ROSSINI pays homage to this philosophy. With a cozy space and a proposal focused on homemade tradition, at ROSSINI each dish is prepared respecting the times, ingredients, and native techniques: pasta sautéed at the moment in its sauce, recipes without shortcuts, and the constant pursuit of Mediterranean balance.

Whether after a stroll through the streets of the Gothic Quarter or to share a quiet evening among friends near the Gran Teatre del Liceu, sitting at the table at ROSSINI is the perfect excuse to rediscover the authentic Italian flavor as it was conceived.

Three quick keys to remember for your next dinner

Simplicity rules: Few ingredients, but of the highest quality.
Pasta water is gold: Save a ladle to bind any sauce in the pan.
Patience and time: Sautéing the pasta with its sauce at the end completely changes the result.

Reserve your table at ROSSINI and experience the authentic Italian gastronomy in Plaza Real, Barcelona.

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