Independent book publisher Chelsea Green announced that due to a record sales year and strong revenue growth, employees would each receive a $2,500 end-of-year bonus.

Leading the company’s record revenue growth was the strong sales of The Art of Fermentation, a New York Times bestselling book by self-described “fermentation fetishist” Sandor Katz. Released in June, the $39.95, 500-page hardcover reference book features an inspiring foreword from Michael Pollan. After four printings there are now more than 50,000 copies in print.

“If Random House can give all their employees a $5000 bonus for Fifty Shades of Gray, then Chelsea Green can give everyone a $2500 bonus due to the phenomenal success of The Art of Fermentation,” announced Margo Baldwin, president and publisher.