It's great if you think parsley sauce is a culinary zenith.
I love me a good parsley sauce. With vinegar!
1/2 cup olive oil
2 tablespoons red wine vinegar
1/2 cup finely chopped parsley
3-4 cloves garlic , finely chopped or minced
2 small red chilies , or 1 red chili, deseeded and finely chopped (about 1 tablespoon finely chopped chili)
3/4 teaspoon dried oregano
1 level teaspoon coarse salt
I usually use red pepper flakes instead of actual chiles and add a bit of smoked paprika.