Choripán Argentino With Chimichurri (Argentinian Hot Dog)

Name: Choripán Argentino With Chimichurri (Argentinian Hot Dog)
Prep time: 20 min
Cook time: 15 min
Total time: 35 min
Cuisine: Latin American, American
Ingredients: 1 small shallot, finely chopped; 1 small Fresno chili, finely chopped, optional; 2 garlic cloves, finely chopped; 1/4 cup red wine vinegar; 1/2 tsp sea salt flakes; 1/4 tsp freshly ground black pepper; 1/3 cup fresh cilantro, finely chopped; 2 tbsp fresh parsley, finely chopped; 1 tbsp fresh oregano, finely chopped; 1/2 cup olive oil; 2 medium ripe tomatoes, finely diced; 1 small red bell pepper, deseeded, diced; 1 small red onion, finely diced; 1 chili, deseeded and chopped, optional; 2 tbsp olive oil; 1 tbsp red wine vinegar; Sea salt flakes, to taste; Freshly ground black pepper, to taste; 1-2 tbsp olive oil; 4 Chorizo sausages; 4 baguette rolls (single or small loaves); 4 tbsp unsalted butter, softened