Elk Grove Village, Ill.-based Doumak, a global supplier of marshmallow products, has promoted Mark Schuessler, its v.p. of sales and marketing, to president and ceo.  Don Muff, the company’s former director of sales, will take over as v.p. of sales and marketing.

Both Schuessler and Muff, who have been with Doumak for 11 and five years, respectively, took on their new responsibilities this past January.