How a Long Island Microbakery Created an Instagram-Worthy Tartine

At Blacksmith’s Breads in Long Beach, New York, Michael Blackburn and partner Raymond Smith are turning out creative loaves of bread, pastries, and sandwiches at what they call their “micro-bread bakery and coffee house,” which is 744 square feet, including the kitchen.

The duo, who opened the cafe in late 2017, had met years earlier doing a catering event and later worked together at chef Alexis Trolf...