Aug. 21 Pupuseria El Guanaco Mex Grill 3616 Atlanta Highway, Flowery Branch Score: 61, Grade: U Person in charge could not demonstrate how to properly wash kitchenware and utensils manually — sink set-up with no rinse step and kitchenware and utensils being washed; could not tell inspector temperature leftover refried beans were to be reheated to; washed gloves and then returned to handling food. Food handlers rinsing and drying hands at hand sink and then putting on gloves to work with food. Open can of Coke sitting on unused flat top grill at cook line.