Chicken Marsala With Mushrooms and Shallots Recipe

Name: Chicken Marsala With Mushrooms and Shallots Recipe
Ingredients: 1 1/4 cups (300ml) Marsala wine (see note); 3/4 cup (180ml) homemade chicken stock or low-sodium store-bought broth; 1 packet unflavored gelatin, such as Knox (2 1/2 teaspoons; 10g); 4 boneless, skinless chicken cutlets, each pounded about 1/2 to 1/4 inch thick (1 3/4 pounds; 780g total); Kosher salt and freshly ground black pepper; About 1 cup all-purpose flour (5 ounces; 140g), for dredging; 1/4 cup (60ml) extra-virgin olive oil, plus more if needed; 10 ounces (280g) cremini mushrooms, stemmed and thinly sliced; 4 medium shallots (6 ounces; 165g), minced; 2 medium cloves garlic, minced; 1 teaspoon (about 3g) minced fresh thyme leaves; 3 tablespoons (45g) cold unsalted butter, cut into cubes; 1 teaspoon (5ml) soy sauce; White wine vinegar, sherry vinegar, or fresh lemon juice, to taste; Minced fresh parsley, for garnish