If beef cooked on the barbecue or Asado is the staple of Argentinian food then Malbec is the staple wine of Argentina, together they make a formidable food pairing.
The essential ingredients are garlic, parsley, oil and vinegar.
Combine the garlic and jalapeno in food processor and pulse to mince finely. Add oregano and parsley; pulse to finely chop.
Add remaining ingredients and process until smooth.
You can just chop the ingredients finely with a knife if you have time or don't have a processor.
Use immediately or refrigerate in a jar for a few days until ready to use.
I like to use this to baste on top of thick pieces of steak as they are being grilled. Add some more chimichurri as you serve the steak. Chimichurri sauce can also be used with spicy grilled sausages.
A dish like Grilled Steak with Chimichurri Sauce needs a strong, rustic wine. A varietal Malbec wine is the way to go.