Brunoise
An advanced French knife cut yielding tiny, uniform cubes measuring exactly 1/8 inch (3mm) on all sides.
Brunoise dimensions: 1/8" x 1/8" x 1/8" (3mm cubes) • Derived from Julienne
The brunoise is an advanced French knife cut that represents the pinnacle of precision prep. It yields tiny, uniform cubes measuring exactly 1/8 inch (3 millimeters) on all sides. To achieve a brunoise, the ingredient is first cut into a julienne (1/8 inch matchsticks). The julienne strips are then gathered together and sliced crosswise at 1/8-inch intervals. This cut is typically reserved for firm vegetables such as carrots, celery, leeks, onions, and turnips. Because the pieces are so small, they cook extremely quickly and distribute evenly throughout a dish, providing a sophisticated presentation and balanced flavor in every bite.
Brunoise cuts are standardly used for refined consommé garnishes, delicate sauces (such as a classic beurre blanc), and fillings. It requires a razor-sharp chef's knife a dull blade will crush the tiny vegetable cells, releasing excess water and ruining the clean shape of the cubes.
Attempting a brunoise cut with a dull knife. The blade slips on the vegetable skin, creating uneven pieces and bruising the ingredients, which causes them to spoil faster.
Classified as a core skill in professional French culinary curricula. A smaller variation, 'fine brunoise', measures 1/16 inch (1.5mm) on all sides.
Ideal for refined garnishes in clear soups, delicate butter sauces, raw salsas, and fine fillings.
Fine dice (1/4 inch cubes, slightly larger and faster to prepare).
Keep brunoised vegetables in a small container lined with a damp paper towel in the refrigerator. Use within 24 hours.