We are a New York chocolate maker with a flagship location in Williamsburg, Brooklyn. Founded by pioneering brothers Rick and Michael Mast in 2007, we are introducing chocolate to the world with an obsessive attention to detail, meticulous craftsmanship, groundbreaking innovation, and inspirational simplicity. We make our signature chocolate bars, beverages, and confections with an emphasis on clarity of flavor.

You can find our products in specialty shops across the globe. Our head office and chocolate factory is located in Building 28 of the historic Brooklyn Navy Yard.


We source directly with regions around the world, looking for the rarest, complex and delicious cacao available. Mast pays far beyond commodity and fair trade minimums and has been instrumental in developing new growing regions.

We also work with our family of partners, including Frankie’s, Amagansett Sea Salt, Stumptown, Brooklyn Grange, Good & Proper Tea, and much more.

Our products are made in facilities that process dairy, nuts and other allergens. Please contact support@mastbrothers.com for more information.


We take pride in our pairings and most importantly, the process. Come visit us for an inside look at excellence as we guide you through a step-by-step, bean-to-bar production. Learn everything about the sourcing, process, and packaging inspirations behind our chocolate confections while exploring how locality influences our flavor profiles and pairings. 

We host private and public tours at our Brooklyn flagship, you are able to book online or visit us in-store for more information. 

Nutritional Information

Please contact support@mastbrothers.com for specific product information.