Beef Stroganoff - With greens

1 pound sirloin steak cut into thin strips 3 tablespoons flour, all-purpose divided 1/2 teaspoon salt 4 tablespoons butter or margarine 3 ounces mushrooms,[...]

For the beef stroganoff: 220 grams mushrooms sliced, I used Portabellini mushrooms, but white button mushrooms work just fine as well 1/2 each onion chopped 2[...]

3 pounds beef, tenderloin thinly sliced 2 teaspoons paprika 2 teaspoons salt 1 teaspoon black pepper ground 1/2 cup butter divided 2 cloves garlic thinly[...]