A relatively new addition to Houston's caffeine scene, Mercantile serves excellent coffee. Part of the café also stocks specialty grocery items. Complement your cuppa with a croissant, pain au chocolat, or Danish. And if you show up early, you can even get yesterday's savory and sweet pastries for half-off. There are a few locations around town. Next door to its Morningside spot, you'll also find its sister business, Plate and Bottle, where you can stop by for a glass of wine.