Chimichurri Skirt Steak with Polenta

Ingredients

• 1 shallot, finely chopped
• 1 Fresno chile or red jalapeño, finely chopped
• 3–4 garlic cloves, thinly sliced or finely chopped
• ½ cup red wine vinegar
• 1 tsp. Diamond Crystal or ½ tsp. Morton kosher salt, plus more
• ½ cup finely chopped fresh cilantro (leaves and tender stems)
• ¼ cup finely chopped fresh flat-leaf parsley (leaves and tender stems)
• 2 Tbsp. finely chopped fresh oregano leaves
• ¾ cup extra-virgin olive oil
• 1 pound Skirt Steak
• 1 cup polenta