How to Make Chimichurri Sauce for Steak From Scratch

If there is a single sauce every home cook should master, it isn’t a labor-intensive French mother sauce or a finicky emulsion that breaks if you breathe on it wrong. It’s chimichurri.

Originating in Argentina and Uruguay, chimichurri is an oil-and-vinegar-based sauce packed with finely chopped fresh parsley, garlic, dried oregano, red pepper flakes, and acid. It is bright, tangy, herbaceous, slightly spicy, and deeply aromatic. While it’s famously paired with grilled flank steak or skirt steak, its vibrant flavor profile makes it a miraculous pairing for grilled chicken, pork chops, roasted vegetables, and even crusty bread.

Making real chimichurri at home requires no cooking, takes under fifteen minutes, and completely elevates a simple weeknight steak into a restaurant-quality meal. Below is a comprehensive guide to understanding, crafting, and perfecting authentic chimichurri sauce from scratch.

Why Food Processors Ruin Traditional Chimichurri

Before gathering ingredients, there is one non-negotiable rule you must understand: put away the food processor and blender.

It is tempting to throw all the ingredients into a high-speed blender, pulse it three times, and call it a day. However, doing so completely ruins the texture and flavor profile of true chimichurri in three distinct ways:

• Pureeing creates an unwanted emulsion: Chimichurri is meant to be a loose, oil-and-vinegar dressing where distinct bits of fresh herbs suspended in oil spoon cleanly over hot meat. Blending emulsifies the oil and vinegar into a thick, pale green paste resembling pesto or mayonnaise.

• Cold-pressed extra virgin olive oil turns bitter when blended: High-speed blades tear apart the polyphenols in extra virgin olive oil, releasing bitter compounds that make the sauce taste harsh and medicinal.

• Herbs turn to sludge: Chopping herbs by hand keeps the cell walls intact longer, preserving their vibrant green color and releasing delicate aromatic oils without turning them into a bruised, swampy paste.

To make authentic chimichurri, rely on a sharp chef’s knife, a large cutting board, and a mixing bowl. The process is tactile, therapeutic, and yields a far superior result.

The Essential Ingredients Breakdown

Because chimichurri requires no heat to cook down flavors, the quality and proportion of every single ingredient matter immensely.

1. Fresh Flat-Leaf Italian Parsley

This is the heart and soul of the sauce. Always use fresh flat-leaf Italian parsley rather than curly parsley. Curly parsley has a tougher texture, a muted flavor, and tends to taste like grass. Flat-leaf parsley brings a clean, pepper-like brightness. Make sure the parsley is thoroughly washed and completely dried before chopping; excess water dilutes the oil and vinegar.

2. Garlic

Garlic provides the pungent kick that cuts through the rich, buttery fat of a steak. Use fresh garlic cloves—never pre-minced garlic from a jar, which tastes sour and flat. Finely mince or grate the garlic so it distributes evenly throughout the sauce rather than leaving large, harsh raw chunks.

3. Red Wine Vinegar

Acid is what gives chimichurri its iconic zing. Red wine vinegar is traditional and provides a punchy, sharp bite that balances the heavy extra virgin olive oil. If red wine vinegar isn’t available, sherry vinegar or white wine vinegar can work in a pinch, but avoid distilled white vinegar, which is overly harsh.

4. Extra Virgin Olive Oil

Olive oil acts as the carrier for all these bold flavors. Choose a high-quality, cold-pressed extra virgin olive oil with a smooth, fruity profile. Avoid overly peppery or aggressive olive oils that might overwhelm the herbs, as well as neutral oils like canola or vegetable oil, which offer no flavor.

5. Dried Oregano

While most of the green in chimichurri comes from fresh parsley, dried oregano adds a crucial earthy, warm background note. Surprisingly, dried oregano is preferred over fresh here because its concentrated, earthy flavor anchors the bright sharpness of the fresh parsley and vinegar.

6. Red Pepper Chili Flakes or Fresh Chili

A touch of heat completes the profile. Traditional Argentine recipes often use ají molido (a mild, slightly sweet dried red pepper flake), but standard red pepper flakes work wonderfully. If you prefer fresh heat, a finely diced red Fresno chili or jalapeño adds both heat and vibrant color.

7. Kosher Salt and Black Pepper

Do not skimp on salt. Kosher salt draws out the juices from the herbs and garlic, uniting the oil and vinegar into a cohesive sauce. Freshly cracked black pepper adds a subtle, warming bite.

Step-by-Step Ingredients List

Here are the ideal ratios for a classic, balanced batch of chimichurri sauce:

• 1 cup finely chopped fresh flat-leaf Italian parsley (stems mostly removed)

• 4 to 5 medium garlic cloves, finely minced or grated

• 2 tablespoons dried oregano

• 1/2 cup high-quality extra virgin olive oil

• 1/4 cup red wine vinegar

• 1 teaspoon dried red pepper flakes (adjust to taste)

• 1 teaspoon coarse kosher salt

• 1/2 teaspoon freshly cracked black pepper

Step-by-Step Preparation Method

Step 1: Prep the Herbs

Wash your fresh parsley thoroughly in cold water. Spin it in a salad spinner or roll it up tightly in clean paper towels until it is completely dry. Trim off the thick, woody bottom stems (small, tender stems near the leaves are fine to include). Using a sharp chef’s knife, rock the blade smoothly across the leaves to create a clean, fine chop. Avoid running the knife over the same pile repeatedly, as this bruises the leaves and turns them dark.

Step 2: Combine the Aromatics and Seasonings

In a medium glass or ceramic mixing bowl, combine the finely chopped parsley, minced garlic, dried oregano, red pepper flakes, kosher salt, and freshly cracked black pepper. Give the dry ingredients a quick toss with a fork so the garlic and spices are evenly distributed through the parsley.

Step 3: Add the Liquid Ingredients

Pour in the red wine vinegar first, whisking gently with a fork to let the acid dissolve the salt and lightly soften the garlic and dried oregano. Next, slowly pour in the extra virgin olive oil while stirring gently. Stir just enough to combine the ingredients into a glossy, loose mixture.

Step 4: Let It Rest (The Secret Step)

While you can technically serve chimichurri immediately, it tastes infinitely better if allowed to sit at room temperature for at least 30 minutes to an hour before serving. This resting period allows the dried oregano to rehydrate, the garlic to mellow slightly in the vinegar, and the olive oil to absorb all the herbal aromatics.

Important Preparation Guidelines

To ensure your chimichurri turns out perfectly every single time, keep these golden guidelines in mind:

• Guideline 1: Maintain the 2-to-1 Oil-to-Acid Ratio. The foundational balance of chimichurri relies on twice as much oil as vinegar (1/2 cup oil to 1/4 cup vinegar). If you prefer a punchier sauce, you can add a splash more vinegar, but dropping below this ratio can make the sauce unpleasantly sour.

• Guideline 2: Never Churn or Emulsify. The sauce should look like a bright green, textured tapestry suspended in golden oil. If the oil separates from the vinegar while sitting, simply give it a light stir with a spoon before serving.

• Guideline 3: Adjust Salt After Resting. Salt behaves differently as herbs break down. Always taste your chimichurri right before serving—after it has rested—and adjust the salt if necessary. Meat requires a well-seasoned sauce to pop.

• Guideline 4: Serve at Room Temperature. Never pour cold chimichurri straight from the fridge onto a hot, freshly rested steak. Cold oil congeals, dulls flavor, and chills your hot meat instantly. Always pull stored chimichurri out of the fridge 30 to 45 minutes before mealtime so the oil returns to a liquid state and the flavors wake up.

• Guideline 5: Pair with the Right Cuts of Meat. Chimichurri shines brightest on rich, beefy cuts cooked over high heat with plenty of crust. Skirt steak, flank steak, hanger steak, ribeye, and flat iron steaks are prime candidates because the acidity cuts through their rich intramuscular fat effortlessly.

Storage and Shelf Life Guidelines

Chimichurri is a versatile sauce that holds up remarkably well over time if stored properly.

• Room Temperature Storage: During a dinner party or meal service, chimichurri can safely sit out covered at room temperature for up to 8 hours. In fact, its flavor peaks around the 2-to-4-hour mark.

• Refrigeration: Store leftover chimichurri in an airtight glass jar or container in the refrigerator for up to 7 to 10 days. Over time, the bright green parsley will darken slightly due to exposure to the vinegar’s acid, but the flavor will remain delicious.

• Oil Solidification: Extra virgin olive oil naturally solidifies and turns cloudy in the refrigerator. This is completely normal. Simply scoop out what you need and let it sit on the counter for 20 minutes, or microwave it on low power for 5 to 10 seconds just to melt the oil.

• Freezing Option: You can freeze chimichurri in ice cube trays for long-term storage. Once frozen, transfer the cubes to a freezer-safe bag for up to 3 months. Pop a cube directly onto roasted vegetables, into soups, or melt it over a hot steak.

Creative Ways to Use Leftover Chimichurri

While steak is the classic partner, a batch of chimichurri opens up dozens of fast, flavorful meal options throughout the week:

• As a Marinade: Use half the batch as a 2-hour marinade for chicken breasts, pork tenderloin, or shrimp before hitting the grill.

• Roasted Potato Drizzle: Toss hot, crispy oven-roasted potatoes directly into a bowl of chimichurri for an instant flavor upgrade.

• Fried Egg Topper: Spoon a generous tablespoon over sunny-side-up eggs served on thick, toasted sourdough bread.

• Grilled Vegetable Dressing: Brush chimichurri over grilled asparagus, zucchini, eggplant, or whole corn on the cob during the last minute of cooking.

Mastering this simple, raw sauce unlocks an effortless way to bring bold, fresh, South American flavor directly to your dinner table.