The Raye family has been grinding mustard in Eastport, since 1900 and is now a working museum. It is the last mill in the country grinding mustard using the old stone process. Visitors are always welcome to view the mill, browse the Maine products shop, and enjoy a light lunch or snack from the "Mustard Shed". Weekdays 8:00 to 5:00. Weekends 10:00 to 4:00.