1 pound linguine
1/4 cup kosher salt
2 tablespoons unsalted butter
1 tablespoon olive oil
1 1/2 pound boneless, skinless chicken breast, cut into 1-inch pieces
2 tablespoons Essence, recipe follows
1 1/2 teaspoons salt
1 cup finely chopped yellow onion
1 tablespoon finely chopped habanero pepper
1 tablespoon minced garlic
1 1/2 cups heavy cream
1 cup diced tomatoes
1/2 cup reserved pasta cooking water
1/2 cup chopped green onion tops
1/4 cup grated Parmesan
2 tablespoons chopped fresh parsley leaves