Chiffonade is recommended for basil garnish because it prevents bruising and discoloration, releasing the basil's aroma and flavor gently while providing an elegant, delicate presentation.
Chiffonade, meaning 'made of rags' in French, is a cutting technique used to create thin ribbons of leafy greens, most commonly basil. When basil is cut with a knife in a rough manner, it tends to bruise easily. Bruising releases enzymes that cause the basil to darken and lose its vibrant green color. This also diminishes the flavor and aroma. The chiffonade technique minimizes bruising by gently rolling the basil leaves together and then slicing them thinly. This results in delicate ribbons that retain their color, flavor, and aromatic oils. When used as a garnish on pasta or soup, the chiffonade basil adds a fresh, vibrant burst of flavor and visual appeal without becoming discolored or mushy. The thin ribbons also integrate well with the dish, providing a pleasant texture.
To prevent your basil chiffonade from oxidizing quickly, toss it lightly with a tiny bit of olive oil immediately after cutting. This creates a barrier against the air and helps maintain its bright green color for a longer period.