Duck a la Vegemite? Watch chef Brent Balika invent a new classic

Vegemite, ubiquitous in Australia, its country of origin, is barely known elsewhere. Brent Balika (Margeaux Brasserie) was aware of the existence of the savory spread, which is made from leftover brewers’ yeast extract and various flavorings, but had never tried it before Christopher Thompson of Coda di Volpe challenged him to cook with it.…