Chicken and Biscuits

1 1/2 pounds boneless, skinless chicken thighs (trimmed of excess fat, if
necessary)

1 cup evaporated milk

1 small onion, finely chopped

1/4 cup chopped green onions

1/4 cup heavy cream

2 1/2 teaspoons salt

2 cups plus 2 tablespoons all-purpose flour

2 tablespoons freshly ground black pepper

2 teaspoons minced garlic

3/4 cup brewed coffee

3/4 cup chicken stock or packaged low-sodium chicken broth, plus more if
needed

Cheddar and Green Onion Biscuits

Vegetable oil, for frying