Unless you or your friends live there, you probably don’t find yourself with many reasons to eat or drink in beautiful (often-boring) Park Slope. But you finally have one in Gristmill, and it’s beautifully un-boring. The food here is hyper-seasonal (as in, if you couldn’t find it on a farm within a few hundred miles away, you’re not finding it on the menu), heavy on the vegetables, and cooked in a wood-burning oven. They do good pizza, but what’s even better here is the weirder stuff - like cornbread served inside a corn husk, or a black pepper and blackberry sundae. Whatever you do, get garlic knots. Lots of them.