Home to fresh pared-down cuisine a notch up from Southeast Asian street food prepared and presented by brother and sister Tuan and Sarah Nguyen Mekong serves quick but healthful takeout or dine-in fare along fast-gentrifying Southeast 13th Avenue. You order at the counter here sans table service off a somewhat limited menu where nothing tops $8.25 including garlic shrimp skewers over vermicelli noodles. Four to five rice or noodle entrees ($7-$8.25) are served with skewers or chunks of honey-lemongrass chicken sesame beef garlic shrimp pork or tofu. And apps are good if predictable crispy eggrolls with fish sauce or two fat salad rolls with a rich plummy peanut sauce ($3.50).