1 of 3 food_4–1024×693.jpg [https://nypost.com/wp-content/uploads/sites/2/2013/08/food_4-1024x693.jpg?quality=90&strip=all&w=870] Bright walls have been whitewashed at the newly renovated French bistro La Mangeoire. Christian Johnston 2 of 3 food_5–1024×693.jpg [https://nypost.com/wp-content/uploads/sites/2/2013/08/food_5-1024x693.jpg?quality=90&strip=all&w=865] After two-plus decades of fatty food served in a “divey” atmosphere, Sidewalk Café reopened with a new rustic look and healthier menu. Tamara Beckwith 3 of 3 food_2–768×949.jpg [https://nypost.com/wp-content/uploads/sites/2/2013/08/food_2-768x949.jpg?quality=90&strip=all&w=477] The lounge at the 21 Club, which has served presidents and dignitaries, now offers bar food and beer. Tamara Beckwith