Grilled Burgers with Chimichurri Sauce

Chimmichurri Sauce
1-2 tablespoons red-wine vinegar (I usually love lots of vinegar but in this I like less and to add a bit of lemon juice)
2 tablespoons water
4 cloves finely minced garlic
1/2 teaspoon dried red pepper flakes
1/2 teaspoon black pepper
1/2 teaspoon salt
1/4 cup olive oil
1/2 to 3/4 cup flat leaf parsley

Combine everything except parsley and olive oil in a bowl. In a food processor pulse/chop parsley and slowly add oil to emulsify. Add other ingredients and pulse a few more times. If you don't have a food processor you can use a blender, just combine all ingredients except oil to start and then slowly add it on "blend", and if you don't have a blender chop the parsley very fine and combine ingredients in a bowl in their order.