1 Tablespoon butter
1 Tablespoon olive oil
1 chicken, cut into 8 pieces
1 onion, chopped
3 carrots, chopped
3 tomatoes, quartered
1 tarragon sprig
1 cup dry white wine
1 Tablespoon tomato paste
3/4 cup
creme fraiche*
1/4 teaspoon red pepper flakes
Salt and pepper to taste