Basil-seed drinks at Vietnamese shops usually hook you up with something extra. The brownish substance, which up close resembles crumbled seaweed, comes from the fleshy part of poontalai seeds, also known as malva nuts, that have been soaked in water, then stripped of their exocarp and kernel. (Basil seeds must be soaked, too, before they take on that "frog's eggs" appearance.) Neither type of seed offers much flavor, but their textures, I've found, induce sipping and stimulate the salivary glands. The other ingredients in this not-too-well-labeled beverage ($2.50) seem to be water, sugar, and more sugar.
Previously: Of the dozen-plus banh mi on offer, the easy way to go is "number one, spicy." Even sauced up, the house special (lately $4.50) — grilled pork, Vietnamese salami, and sliced pork roll with the customary carrot, daikon, and cilantro — won't set your mouth aflame. You'll need another excuse if you want to reach for a drink.
Saigon Vietnamese Sandwich
(formerly Viet-Nam Banh Mi So 1)
369 Broome St. (Mott-Elizabeth Sts.), Manhattan
212-219-8341
www.Vietnamese-Sandwich.com