University of Oxford neuroscientist Charles Spence:
"We’ve shown that if you take something with competing flavors, something like bacon-and-egg ice cream, we were able to change people’s perception of the dominant flavor—is it bacon, or egg?—simply by playing sizzling bacon sounds or farmyard chicken noises."
"What Does Sweetness Sound Like? (Smithsonian)
The ice cream above is fake, but the research is real.