Finely chop shallot, chile, garlic, cilantro, parsley, and oregano.
Combine shallot, chile, garlic, vinegar, and 1 tsp. salt in a medium bowl. Let sit 10 minutes.
Stir in cilantro, parsley, and oregano.
Using a fork, whisk in oil.
Season with salt to taste
notes
Can also be used as a marinade
The "chimichurri herbs" make great summer plants, and bonus is that you can always use them up to make extra sauce.
I found the ratio of herbs to olive oil and vinegar in the original recipe to be off, so instead, I add enough oil and vinegar to coat the other ingredients, and then add more to taste.