Preserving, using up, and seasonal eating is the Cornersmith way. Since opening their neighborhood caf? in 2011, Alex Elliott-Howery and Sabine Spindler have been committed to sustainability, and their recipes always put veggies first. Quick recipes include roasted sweet potato and parsnip topped with feta and walnuts, or make a tabbouleh with leftover veg ahead of time for an autumnal evening.