Dicing vegetables and fruits into a brunoise: the ultimate guide

From classic vegetable brunoise to exotic fruit brunoise, dicing into tiny cubes is a hallmark of refined cuisine. This comprehensive guide, designed to be the ultimate reference, accompanies you from the moment you pick up your knife to the final plate, answering all your questions, even those you haven't yet thought of.

Definition: What is brunoise?

First things first, let's lay the groundwork. Brunoise is a cutting technique that involves dicing food into tiny, uniform cubes, measuring 1 to 3 millimeters on each side. Much more than just cutting, it's a skill that transforms a dish, ensuring even cooking, a delicate texture, and perfect flavor diffusion.

Essential equipment

To embark on this adventure of precision, let's start at the beginning: the tools.

• The knife: A sharp 20cm chef's knife is your best ally. Its weight and length provide the perfect balance for clean cuts.
• The cutting board: A board made of wood or plastic, wide and above all, stable.

Pro tip: Place a damp cloth under your cutting board to stabilize it. This is the first safety precaution in a professional kitchen.

Safety first: the claw hand technique

Now that your work surface is ready and your equipment chosen, it's time to address the most important point before the first cut: your safety . The blade should slide along your knuckles, never towards your fingertips. To achieve this, curl your fingers inwards, with your thumb tucked back. Your knuckles will act as a vertical guide, protecting your fingers and ensuring perfectly parallel slices.

The detailed technique: dicing step by step

Once this safety precaution is mastered, we can finally tackle the heart of the matter: the cutting technique itself. Let's use a carrot to illustrate the process in 4 clear phases.

• Phase A: Trim and stabilize. First, peel the carrot. Cut off the ends, then a thin slice along its entire length to create a flat, stable surface. This will prevent your vegetable from rolling.
• Phase B: The slices Next, cut the carrot into thin and even slices 1 to 3 mm thick.
• Phase C: The sticks (the julienne) Then, layer a few slices and cut them into sticks 1 to 3 mm wide.
• Phase D: The dice (the brunoise) Finally, gather the sticks into a compact bundle and chop them perpendicularly. The dice form as if by magic.

Adapting the technique: the guide by food

Congratulations, you've now mastered the fundamental technique! However, cooking is a world of diversity, and each ingredient has its own unique characteristics. So let's see how to adapt this technique.

• Tomato brunoise: For this delicate fruit, it is crucial to peel it (remove the skin after a thermal shock) and remove the seeds. Only the firm flesh should be diced to obtain perfect cubes.
• Diced zucchini and bell peppers: With zucchini, avoid the spongy core. With bell peppers, place them skin-side down on the cutting board so the blade doesn't slip.
• Fruit brunoise (apple, pear, mango): After peeling and removing the core or pit, proceed in the same way. Don't forget the tip: a drizzle of lemon juice on fruits that oxidize, such as apples or pears.

The perfect recipe: sea bream fillet on a Provençal brunoise

Knowing how to cut is one thing, but making the result look its best is another. To immediately put your new skill into practice, here's a recipe where brunoise isn't just a garnish, but the star of the plate.

Ingredients for 2 people:

• 2 sea bream fillets with skin (approximately 150g each)
• 1 small courgette
• 1/2 red bell pepper
• 1/2 tomato (peeled and seeded)
• 1 small shallot
• 1 clove of garlic
• 2 tbsp olive oil
• A few sprigs of fresh thyme
• Fleur de sel, freshly ground pepper

Preparation :

1. Prepare the vegetables: First, make a brunoise with the courgette, pepper, tomato and shallot. Finely chop the garlic.
2. Cook the diced vegetables: Next, in a hot pan with 1 tablespoon of olive oil, sauté the shallot and garlic. Add the bell pepper and zucchini and cook for 5 minutes over medium heat. The diced vegetables should remain slightly crisp. At the end of cooking, add the diced tomatoes and thyme. Season with salt and pepper and keep warm.
3. Cook the fish: Meanwhile, score the skin of the sea bream. In a hot pan with the remaining oil, place the fillets skin-side down. Cook for 3-4 minutes until the skin is golden and crispy. Turn over and cook for 1 minute on the flesh side.
4. To serve: Finally, in each plate, place a bed of warm Provençal brunoise and gently place the sea bream fillet on top.

Chef's tip: For extra flavor, you can deglaze the brunoise pan with a spoonful of white balsamic vinegar just before adding the tomato.

Conservation and yield: the secrets of organization

After the effort and the reward often comes the question of organization. What to do if you have leftover diced vegetables? How to plan your chopping?

• Storage: Diced root vegetables can be kept for 24 hours in the refrigerator in a container of cold water. Other diced vegetables (tomatoes, onions, fruits) are more delicate and should be used immediately.
• Freezing: Frozen diced vegetables are a perfectly viable option. To make them at home, blanch your diced vegetables for 1 minute, cool them rapidly in ice water, drain well, and freeze flat.
• Yield: Keep in mind that there is a loss of approximately 25% between the raw vegetable and the final diced carrot (due to peelings and trimmings). Therefore, allow 150g of raw carrots to obtain approximately 110-120g of diced carrots.

Frequently Asked Questions: The Brunoise FAQ

We've covered a lot of ground, but some specific questions often remain unanswered. Let's gather the most frequently asked questions here to leave no stone unturned.

• What is the exact size of a brunoise? The standard size is 1 to 3 mm. At home, don't focus on the exact size, but rather aim for consistency.
• Is there a device for dicing vegetables into a brunoise? Yes, there are professional mandolines and high-end food processors with specific grids. For home use, a manual dicer (a pusher with a grid) is an option, but the result is often less neat and more difficult to clean than with a good knife.
• How do you make a tomato brunoise without turning it into mush? The secret, let's repeat, is to peel and seed the tomato. You only need to chop the flesh, which is much firmer.
• What to do with a brunoise of vegetables? The possibilities are endless! As a base for a sauce (mirepoix), as a garnish for soup, in a pan to accompany fish, as a fresh salsa for a verrine , or even raw to give crunch to a tabbouleh.

Conclusion: dicing into brunoise is no longer a secret to you

With all this information, the brunoise puzzle is now complete. You have the keys to understanding the why and the how: the technique, safety, adapting it to different foods, a recipe to inspire you, and answers to your questions. Brunoise is no longer an obstacle, but a true tool in your creative arsenal. The only remaining step is the most enjoyable: practice. So, grab your knives!