An all-day cafe can be boring and utilitarian, or it can be the kind of effortlessly cool place you’re always making an excuse to visit. Textbook, a cafe on Dekalb Avenue in Fort Greene, is the latter. It’s casual enough for a solo lunch or a quick catch-up with a friend, but cute enough for a low-key date. In the morning, they serve great coffee, pastries, and a selection of inventive breakfast sandwiches. We particularly love The Persian, which is basically a salad inside of a pita. As the day wears on, coffee turns into refreshing pick-me-ups like draft watermelon juice and a solid wine and beer list. Breakfast sandwiches turn into lunch or dinner sandwiches. There’s ample sidewalk seating, and the exterior is covered in adorable black and white illustrations.