Christmas Salted Cod

Name: Christmas Salted Cod
Ingredients: 1 pound dried salted cod; 1/2 cup olive oil; 1 white onion (peeled, halved, thinly sliced); 4 cloves garlic (finely chopped or pressed); 1 1/2 pounds ripe tomatoes (chopped, or a 28-ounce can crushed tomatoes); 2 red bell peppers (roasted, sweated, peeled and diced); 1 pound baby potatoes (peeled, halved if larger than 1-inch); 2 teaspoons white distilled vinegar; 1/4 cup fresh Italian parsley (chopped); 1/3 cup slivered almonds; 1/4 cup manzanilla olives stuffed with pimientos (thinly sliced); 8 to 10 pickled pepperoncini peppers or chiles güeros (plus more for serving); French baguette (to slice and toast)